Live/247 Rank/Connecticut

Connecticut 24/7 Rank

Every station in Connecticut ranked by its 247 score out of 100: how reliably it reports, how accurate its readings are against a reference station, how they pass their checks and how they stand against the forecast, over the last seven days.

276 stations ranked40.9% sent every report dueranked October 4, 2026page 1 of 2Connecticut instrumentsConnecticut weather

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. Of the 276 ranked here, 269 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every ranked station, first to last

1stLast

Each rank wears its colour: first in its state in bright green, last in deep red, and every rank between mixed along the band.

How they reported this week

The days behind it

7 days 30 days90 days

every report90 to 99%under 90%

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
1	Sikorsky Memorial AirportBDR	99.8	Gauge	Fairfield	100%	7 of 7	25 min	24 h
1	New Haven Tweed APHVN	99.8	Gauge	New Haven	100%	7 of 7	25 min	24 h
3	CDWC3CDWC3	99.8	DCP	-	100%	7 of 7	34 min	25 h
3	LLIC3LLIC3	99.8	DCP	-	100%	7 of 7	34 min	25 h
3	ZORC3ZORC3	99.8	DCP	-	100%	7 of 7	34 min	25 h
6	Reference Climate StationNFKC3	99.8	Cooperative	Litchfield	100%	7 of 7	63 min	24 h
7	New Harford 1E - Nepaug RiverBAKC3	99.8	Cooperative	Litchfield	100%	7 of 7	1.9 h	24 h
8	MDDC3MDDC3	99.8	DCP	-	100%	7 of 7	1.9 h	24 h
8	SIMC3SIMC3	99.8	DCP	-	100%	7 of 7	1.9 h	24 h
10	Shelton 1.7 WSWCT-FR-123	99.8	Volunteer	Fairfield	100%	3 of 3	26 min	24 h
10	Norwalk 3.2 NCT-FR-124	99.8	Volunteer	Fairfield	100%	3 of 3	26 min	24 h
10	Middlefield 1.4 WCT-MD-38	99.8	Volunteer	Middlesex	100%	3 of 3	26 min	24 h
13	Colchester 5.5 NNECT-NL-74	99.8	Volunteer	New London	100%	3 of 3	26 min	26 h
14	Stamford 1.0 SCT-FR-105	99.8	Volunteer	Fairfield	100%	3 of 3	26 min	24 h
14	Sherman 1.2 ECT-FR-113	99.8	Volunteer	Fairfield	100%	3 of 3	26 min	24 h
14	Salmon Brook 4.9 WSWCT-HR-132	99.8	Volunteer	Hartford	100%	3 of 3	26 min	24 h
14	North Canton 0.8 SSWCT-HR-28	99.8	Volunteer	Hartford	100%	3 of 3	26 min	24 h
14	Newington 1.9 SSWCT-HR-65	99.8	Volunteer	Hartford	100%	3 of 3	26 min	24 h
14	Moodus 0.7 SSWCT-MD-41	99.8	Volunteer	Middlesex	100%	3 of 3	26 min	24 h
14	Central Waterford 2.7 SSWCT-NL-22	99.8	Volunteer	New London	100%	3 of 3	26 min	24 h
14	Norwich 5.4 SECT-NL-50	99.8	Volunteer	New London	100%	3 of 3	26 min	24 h
14	Columbia 2.6 SCT-TL-54	99.8	Volunteer	Tolland	100%	3 of 3	26 min	24 h
23	New Canaan 1.9 ENECT-FR-3	99.8	Volunteer	Fairfield	100%	3 of 3	26 min	24 h
23	Southington 1.7 WNWCT-HR-55	99.8	Volunteer	Hartford	100%	3 of 3	26 min	24 h
23	Durham 1.2 WCT-MD-24	99.8	Volunteer	Middlesex	100%	3 of 3	26 min	24 h
23	Wallingford Center 1.9 WNWCT-NH-44	99.8	Volunteer	New Haven	100%	3 of 3	26 min	24 h
23	Mystic 3.4 NWCT-NL-46	99.8	Volunteer	New London	100%	3 of 3	26 min	24 h
23	Waterford 1.1 ECT-NL-60	99.8	Volunteer	New London	100%	3 of 3	26 min	24 h
29	Berlin 1.1 SECT-HR-149	99.8	Volunteer	Hartford	100%	3 of 3	26 min	25 h
29	North Granby 1.3 ENECT-HR-8	99.8	Volunteer	Hartford	100%	3 of 3	26 min	25 h
31	East Killingly 1.3 SWCT-WN-4	99.8	Volunteer	Windham	100%	3 of 3	26 min	26 h
32	Plainville 1.6 SCT-HR-154	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
33	Bethel 3.5 NNECT-FR-41	99.8	Volunteer	Fairfield	100%	3 of 3	86 min	27 h
34	Kensington 0.4 NCT-HR-145	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
34	Higganum 0.7 NCT-MD-23	99.8	Volunteer	Middlesex	100%	3 of 3	86 min	24 h
34	Prospect 1.9 ENECT-NH-14	99.8	Volunteer	New Haven	100%	3 of 3	86 min	24 h
37	Waterford 2.3 SCT-NL-71	99.8	Volunteer	New London	100%	3 of 3	86 min	25 h
38	Manchester 2.2 NECT-HR-116	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
38	Warren 2.4 WNWCT-LT-20	99.8	Volunteer	Litchfield	100%	3 of 3	86 min	24 h
38	New Milford 5.3 SSWCT-LT-22	99.8	Volunteer	Litchfield	100%	3 of 3	86 min	24 h
38	New Milford 3.1 WNWCT-LT-37	99.8	Volunteer	Litchfield	100%	3 of 3	86 min	24 h
38	Northford 0.8 SWCT-NH-72	99.8	Volunteer	New Haven	100%	3 of 3	86 min	24 h
38	Ledyard 0.5 NECT-NL-80	99.8	Volunteer	New London	100%	3 of 3	86 min	24 h
38	Canterbury 0.4 SCT-WN-29	99.8	Volunteer	Windham	100%	3 of 3	86 min	24 h
45	Staffordville 0.4 NNWCT-TL-2	99.8	Volunteer	Tolland	100%	3 of 3	86 min	25 h
45	Somersville 0.2 ENECT-TL-35	99.8	Volunteer	Tolland	100%	3 of 3	86 min	25 h
47	Brookfield 3.3 SSECT-FR-9	99.8	Volunteer	Fairfield	100%	3 of 3	86 min	24 h
47	West Hartford 0.5 ESECT-HR-135	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
47	Avon 0.6 SSWCT-HR-156	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
47	Wethersfield 1.2 WSWCT-HR-6	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
47	Niantic 1.1 SWCT-NL-32	99.8	Volunteer	New London	100%	3 of 3	86 min	24 h
47	Willington 2.7 SECT-TL-27	99.8	Volunteer	Tolland	100%	3 of 3	86 min	24 h
53	Manchester 0.4 ENECT-HR-100	99.8	Volunteer	Hartford	100%	3 of 3	86 min	25 h
54	Trumbull 2.6 SSECT-FR-106	99.8	Volunteer	Fairfield	100%	3 of 3	86 min	26 h
54	Wallingford Center 3.3 NNWCT-NH-43	99.8	Volunteer	New Haven	100%	3 of 3	86 min	26 h
56	Madison 6.3 NNWCT-NH-100	99.8	Volunteer	New Haven	100%	3 of 3	86 min	28 h
57	Suffield Depot 3.3 NNECT-HR-57	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
57	Cromwell 2.6 NCT-MD-46	99.8	Volunteer	Middlesex	100%	3 of 3	86 min	24 h
57	East Lyme 0.5 SWCT-NL-29	99.8	Volunteer	New London	100%	3 of 3	86 min	24 h
57	Old Lyme 3.4 ESECT-NL-38	99.8	Volunteer	New London	100%	3 of 3	86 min	24 h
61	Farmington 1.6 SWCT-HR-39	99.8	Volunteer	Hartford	100%	3 of 3	86 min	24 h
61	Canaan 4.2 ESECT-LT-28	99.8	Volunteer	Litchfield	100%	3 of 3	86 min	24 h
63	Vernon 3.0 NNECT-TL-59	99.8	Volunteer	Tolland	100%	3 of 3	86 min	25 h
64	New Hartford Center 1.7 SSWCT-LT-21	99.8	Volunteer	Litchfield	100%	3 of 3	86 min	2 days
64	Willimantic 1.3 SSECT-WN-31	99.8	Volunteer	Windham	100%	3 of 3	86 min	2 days
66	Ridgefield 2.4 NNECT-FR-99	99.8	Volunteer	Fairfield	100%	3 of 3	2.4 h	24 h
66	Farmington 4.9 WSWCT-HR-41	99.8	Volunteer	Hartford	100%	3 of 3	2.4 h	24 h
66	Woodbury Center 1.5 SSWCT-LT-34	99.8	Volunteer	Litchfield	100%	3 of 3	2.4 h	24 h
66	New Hartford Center 3.2 SWCT-LT-9	99.8	Volunteer	Litchfield	100%	3 of 3	2.4 h	24 h
66	Griswold 0.9 NCT-NL-21	99.8	Volunteer	New London	100%	3 of 3	2.4 h	24 h
71	Granby 1.2 NWCT-HR-130	99.8	Volunteer	Hartford	100%	3 of 3	2.4 h	24 h
72	New London 1.0 NNWCT-NL-6	99.8	Volunteer	New London	100%	3 of 3	2.4 h	2 days
73	North Branford 1.1 ENECT-NH-103	99.8	Volunteer	New Haven	100%	3 of 3	2.4 h	24 h
73	Colchester 0.6 ENECT-NL-70	99.8	Volunteer	New London	100%	3 of 3	2.4 h	24 h
75	New Canaan 3.8 NCT-FR-59	99.8	Volunteer	Fairfield	100%	3 of 3	2.4 h	25 h
76	Pawcatuck 0.8 SECT-NL-52	99.8	Volunteer	New London	100%	3 of 3	2.4 h	24 h
77	CT-FR-126CT-FR-126	99.8	COCORAHS	-	100%	3 of 3	2.4 h	24 h
77	Windsor 1.4 SSWCT-HR-124	99.8	Volunteer	Hartford	100%	3 of 3	2.4 h	24 h
79	New Haven/TweedHVN	99.8	Airport	New Haven	99.4%	167 of 168	6 min	2 h
80	Oxford (AWOS)OXC	99.8	Airport	New Haven	99.4%	167 of 168	9 min	1.7 h
81	Bridgeport/SikorskyBDR	99.6	Airport	Fairfield	98.8%	166 of 168	7 min	2.6 h
82	Connecticut River AT Middle HaddamMHDC3	99.4	Gauge	Middlesex	98.8%	166 of 168	10 min	2 h
83	Hartford/BradleyBDL	99.4	Airport	Hartford	98.2%	165 of 168	8 min	2 h
84	Groton/New LondonGON	99.3	Airport	New London	100%	168 of 168	13 min	67 min
85	Derby 1.0 SSECT-NH-102	99.3	Volunteer	New Haven	100%	3 of 3	3.4 h	24 h
85	Mansfield Center 2.7 NECT-TL-30	99.3	Volunteer	Tolland	100%	3 of 3	3.4 h	24 h
87	Mystic 1.6 WCT-NL-37	99.3	Volunteer	New London	100%	3 of 3	3.4 h	24 h
88	Prospect 0.5 SWCT-NH-22	99.3	Volunteer	New Haven	100%	3 of 3	3.4 h	24 h
88	Danielson 3.2 ESECT-WN-26	99.3	Volunteer	Windham	100%	3 of 3	3.4 h	24 h
90	Norwalk 1.4 ENECT-FR-66	99.3	Volunteer	Fairfield	100%	3 of 3	3.4 h	24 h
91	NONEWAUG RIVER AT MinortownMWNC3	99.2	Gauge	Litchfield	98.2%	165 of 168	10 min	2 h
92	Stony Brook Near West SuffieldSTBC3	98.9	Gauge	Hartford	100%	168 of 168	15 min	61 min
93	Woodstock 0.5 NCT-WN-28	98.9	Volunteer	Windham	100%	3 of 3	4.4 h	24 h
94	Enfield 1.5 SECT-HR-5	98.9	Volunteer	Hartford	100%	3 of 3	4.4 h	24 h
95	Rocky Hill 1.3 ECT-HR-68	98.9	Volunteer	Hartford	100%	3 of 3	4.4 h	24 h
96	WEST BR FARMINGTON AT RivertonRVRC3	98.8	Gauge	Litchfield	100%	168 of 168	15 min	1.5 h
97	Hartford/BrainardHFD	98.8	Airport	Hartford	99.4%	167 of 168	6 min	2 h
98	Long Island Sound AT StamfordSTDC3	98.7	Gauge	Fairfield	99.4%	334 of 336	15 min	1.5 h
99	BurlingtonBLGC3	98.7	Gauge	Hartford	99.4%	167 of 168	15 min	2 h
99	Essex - Connecticut RiverESXC3	98.7	Gauge	Middlesex	99.4%	167 of 168	15 min	2 h
101	Robertsville - Still RiverRBVC3	98.6	Gauge	Litchfield	99.4%	167 of 168	15 min	2 h
102	Colebrook River LakeCRLC3	98.6	Gauge	Litchfield	99.4%	167 of 168	15 min	2 h
103	Pomperaug River AT SouthburySBYC3	98.5	Gauge	New Haven	98.8%	166 of 168	15 min	2 h
104	Sandy Hook - Pootatuck RiverPOOC3	98.5	Gauge	Fairfield	98.8%	166 of 168	15 min	2 h
105	Amston 1.7 NCT-TL-57	98.4	Volunteer	Tolland	100%	3 of 3	5.4 h	24 h
106	Old Saybrook 2.9 NNECT-MD-45	98.4	Volunteer	Middlesex	100%	3 of 3	5.4 h	24 h
107	StafordvilleSFVC3	98.3	Cooperative	Tolland	100%	7 of 7	-	24 h
108	Danbury MunicipalDXR	98.2	Airport	Fairfield	96.4%	162 of 168	6 min	3 h
109	WoodvilleWDVC3	97.9	Gauge	Litchfield	100%	168 of 168	19 min	75 min
110	Farmington River AT TariffvilleTARC3	97.9	Gauge	Hartford	100%	168 of 168	20 min	60 min
111	MansfieldMANC3	97.9	Gauge	Tolland	100%	168 of 168	20 min	75 min
112	Pendleton Hill Brook AT Clarks FallsPHBC3	97.7	Gauge	New London	99.4%	167 of 168	20 min	1.8 h
112	Yantic River AT YanticYTCC3	97.7	Gauge	New London	99.4%	167 of 168	20 min	1.8 h
114	Still River AT BrookfieldBKFC3	97.7	Gauge	Fairfield	99.4%	167 of 168	20 min	2 h
114	MansfieldFENC3	97.7	Gauge	Tolland	99.4%	167 of 168	20 min	2 h
114	Housatonic River AT Falls VillageFLVC3	97.7	Gauge	Litchfield	99.4%	167 of 168	20 min	2 h
114	WEEKEEPEEMEE RIVER AT HotchkissvilleHKVC3	97.7	Gauge	Litchfield	99.4%	167 of 168	20 min	2 h
114	Quinnipiac River AT SouthingtonQPCC3	97.7	Gauge	Hartford	99.4%	167 of 168	20 min	2 h
114	Stamford - Rippowam RiverRIPC3	97.7	Gauge	Fairfield	99.4%	167 of 168	20 min	2 h
120	Old LymeLYMC3	97.7	Gauge	New London	99.4%	167 of 168	20 min	2 h
121	New Hartford Center 1.5 NCT-LT-18	97.5	Volunteer	Litchfield	100%	3 of 3	7.4 h	24 h
122	South Windsor 2.4 SSECT-HR-129	97.5	Volunteer	Hartford	100%	3 of 3	7.4 h	24 h
123	Salmon River 4 SE East HamptonEHMC3	97.5	Gauge	Middlesex	98.8%	166 of 168	20 min	2 h
124	Willimantic River AT CoventryCVTC3	97.4	Gauge	Tolland	98.8%	166 of 168	20 min	2 h
124	North Grosvenordale - French RiverGRVC3	97.4	Gauge	Windham	98.8%	166 of 168	20 min	2 h
124	Mount Hope River 1 AT WarrenvilleWRNC3	97.4	Gauge	Windham	98.8%	166 of 168	20 min	2 h
127	Natchaug River AT ChaplinCHAC3	97.4	Gauge	Windham	95.8%	161 of 168	15 min	2 h
127	Salmon Creek Near Lime RockLRKC3	97.4	Gauge	Litchfield	95.8%	161 of 168	15 min	2 h
129	HanoverHNOC3	97.3	Gauge	Windham	98.2%	165 of 168	20 min	2 h
130	Ridgefield 3.6 NCT-FR-58	97.0	Volunteer	Fairfield	100%	3 of 3	8.4 h	24 h
131	Connecticut River AT ThompsonvilleTMVC3	96.9	Gauge	Hartford	100%	168 of 168	25 min	75 min
132	Connecticut River AT HartfordHFDC3	96.9	Gauge	Hartford	100%	168 of 168	25 min	76 min
133	Bridgeport - 8467150BRHC3	96.8	Gauge	Fairfield	98.8%	830 of 840	18 min	48 min
133	New Haven - 8465705NWHC3	96.8	Gauge	New Haven	98.8%	830 of 840	18 min	48 min
135	BRANCH BROOK AT Black Rock LakeTRBC3	96.7	Gauge	Litchfield	99.4%	167 of 168	25 min	1.7 h
136	NORTHFIELD BROOK AT Northfield Br LakeNBLC3	96.7	Gauge	Litchfield	99.4%	167 of 168	25 min	1.7 h
137	Hop Brook 5 S Hop Brook LakeUNCC3	96.7	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
138	Naugatuck River Below ThomastonTMTC3	96.7	Gauge	Litchfield	99.4%	167 of 168	25 min	1.5 h
139	Naugatuck River AT Beacon FallsBEAC3	96.7	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
139	Hop Brook Lake TailwaterHOPC3	96.7	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
139	Quinebaug River AT Jewett CityJCYC3	96.7	Gauge	New London	99.4%	167 of 168	25 min	2 h
139	Thomaston Rsvr DamTMSC3	96.7	Gauge	Litchfield	99.4%	167 of 168	25 min	2 h
139	East Branch Rsvr DamTORC3	96.7	Gauge	Litchfield	99.4%	167 of 168	25 min	2 h
139	Naugatuck River AT WaterburyWATC3	96.7	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
139	Mad River RsvrWINC3	96.7	Gauge	Litchfield	99.4%	167 of 168	25 min	2 h
146	Hockanum River 3 AT East HartfordEHDC3	96.7	Gauge	Hartford	99.4%	167 of 168	25 min	2 h
146	Housatonic River AT Stevenson DamSTVC3	96.7	Gauge	New Haven	99.4%	167 of 168	25 min	2 h
146	Farmington River AT UnionvilleUNVC3	96.7	Gauge	Hartford	99.4%	167 of 168	25 min	2 h
149	QuinebaugQBGC3	96.6	Gauge	Windham	98.8%	166 of 168	24 min	2 h
150	Housatonic River AT GaylordsvilleGAYC3	96.6	Gauge	Fairfield	98.8%	166 of 168	24 min	2 h
151	Quinebaug River 2 SSW West Thompson LakeWTHC3	96.5	Gauge	Windham	98.8%	166 of 168	25 min	1.5 h
152	Hall Meadow DamHMDC3	96.5	Gauge	Litchfield	98.8%	166 of 168	25 min	2 h
152	Quinebaug River AT PutnamPUTC3	96.5	Gauge	Windham	98.8%	166 of 168	25 min	2 h
152	Shetucket River AT WillimanticWLMC3	96.5	Gauge	Windham	98.8%	166 of 168	25 min	2 h
155	Natchaug River 1 NE Ntchg WillimanticWMNC3	96.5	Gauge	Windham	98.8%	166 of 168	25 min	1.5 h
156	Natchaug River 2 SW Mansfield Hollow LkMFDC3	96.5	Gauge	Windham	98.8%	166 of 168	25 min	2 h
156	Shields Lake - Ridgefield BrookRIDC3	96.5	Gauge	Fairfield	98.8%	166 of 168	25 min	2 h
156	West Hartland - Hubbard BrookWHTC3	96.5	Gauge	Hartford	98.8%	166 of 168	25 min	2 h
159	Harrisville - Little RiverHARC3	95.9	Gauge	Windham	100%	168 of 168	30 min	76 min
160	New London Harbor (IN MLLW)NLHC3	95.7	Gauge	New London	98.2%	825 of 840	23 min	48 min
161	Coventry 0.3 NNECT-TL-40	95.6	Volunteer	Tolland	100%	3 of 3	11.4 h	24 h
162	Plainville 1.7 SWCT-HR-83	95.6	Volunteer	Hartford	100%	3 of 3	11.4 h	24 h
163	Broad Brook AT Broad BrookBROC3	95.5	Gauge	Hartford	98.8%	166 of 168	30 min	2 h
164	West Hartford 1.6 SECT-HR-115	95.2	Volunteer	Hartford	100%	3 of 3	12.4 h	25 h
165	Norwich 2.5 NNECT-NL-10	95.2	Volunteer	New London	100%	3 of 3	12.4 h	24 h
166	Willimantic (ASOS)IJD	95.1	Airport	Windham	89.3%	176 of 197	7 min	60 min
167	NFKC3NFKC3	94.5	DCP	-	85.7%	6 of 7	3.1 h	2 days
168	Higganum 0.8 NECT-MD-26	94.2	Volunteer	Middlesex	100%	3 of 3	14.4 h	24 h
168	Guilford Center 2.7 WSWCT-NH-56	94.2	Volunteer	New Haven	100%	3 of 3	14.4 h	24 h
170	Shelton 1.3 WCT-FR-108	93.8	Volunteer	Fairfield	100%	3 of 3	15.4 h	24 h
171	Glastonbury Center 4.2 ENECT-HR-126	93.8	Volunteer	Hartford	100%	3 of 3	15.4 h	24 h
172	WINDSOR - 91SB - At Rt 75CT038	93.1	Road	Hartford	94.9%	319 of 336	28 min	2.3 h
173	OLD SAYBROOK - I95SB West End of CT US CTDOTCT027	93.1	Road	Middlesex	94.9%	319 of 336	28 min	2.3 h
173	PLAINVILLE - I84WB - Between Rt7 CT US CTDOTCT029	93.1	Road	Hartford	94.9%	319 of 336	28 min	2.3 h
175	NORTH CANAAN - Rt44 WB East of C CT US CTDOTCT017	93.0	Road	Litchfield	94.6%	318 of 336	28 min	2.3 h
176	SHARON - Sharon Valley Rd - Shar CT US CTDOTCT032	93.0	Road	Litchfield	94.6%	318 of 336	28 min	2.3 h
177	South Kent 0.1 SECT-LT-51	92.9	Volunteer	Litchfield	100%	3 of 3	17.4 h	24 h
178	Vernon 1.6 NCT-TL-50	92.9	Volunteer	Tolland	100%	3 of 3	17.4 h	2 days
179	ENFIELD - I91SB - at Exit 48CT022	92.9	Road	Hartford	94.3%	317 of 336	28 min	2.3 h
179	GREENWICH - I95NB - Exit 4CT023	92.9	Road	Fairfield	94.3%	317 of 336	28 min	2.3 h
179	NORWICH - I395NB - At Exit 83CT026	92.9	Road	New London	94.3%	317 of 336	28 min	2.3 h
182	MADISON- I95SB - West of x62CT033	92.8	Road	New Haven	94.0%	316 of 336	28 min	2.3 h
183	LEBANON - Rt2WB - In Median West CT US CTDOTCT005	92.7	Road	New London	93.7%	315 of 336	28 min	2.3 h
184	ChesterSNC	92.7	Airport	Middlesex	92.8%	468 of 504	4 min	4.3 h
185	SEYMOUR - Rt8NB - On ramp from R CT US CTDOTCT018	92.6	Road	New Haven	94.6%	318 of 336	28 min	2.3 h
186	UNION - I84WB - At Weigh Station CT US CTDOTCT037	92.6	Road	Tolland	93.4%	314 of 336	28 min	2.3 h
187	EAST HARTFORD - I384WB - OP to I CT US CTDOTCT001	92.6	Road	Hartford	93.1%	313 of 336	28 min	2.3 h
188	FAIRFIELD - I95SB - at Exit 21CT008	92.1	Road	Fairfield	93.7%	315 of 336	28 min	2.8 h
189	MIDDLEBURY- I84WB - South of Sou CT US CTDOTCT015	92.0	Road	New Haven	93.4%	314 of 336	28 min	2.8 h
190	Plainville4B8	92.0	Airport	Hartford	93.0%	469 of 504	4 min	4.3 h
191	Coginchaug River AT CoginchaugCOGC3	91.9	Gauge	Middlesex	91.5%	205 of 224	35 min	61 min
192	MILFORD - Rt15SB - Sikorsky Brid CT US CTDOTCT010	91.8	Road	New Haven	94.9%	319 of 336	28 min	2.5 h
193	NEWINGTON - Rt15NB - Berlin Tpke CT US CTDOTCT021	91.8	Road	Hartford	91.0%	306 of 336	28 min	2.3 h
194	NEW MILFORD - US Hwy 7 NB - Kent CT US CTDOTCT003	91.4	Road	Litchfield	92.8%	312 of 336	28 min	3.2 h
195	GREENWICH - Rt15SB - Greenwich S CT US CTDOTCT009	91.0	Road	Fairfield	94.6%	318 of 336	28 min	2.3 h
196	HADDAM - 9SB - At Exit 8CT031	90.8	Road	Middlesex	92.5%	311 of 336	28 min	3.3 h
197	MERIDEN - I691EB At Exit 8CT040	90.6	Road	New Haven	93.7%	315 of 336	28 min	2.8 h
198	Stonington 1.4 NNWCT-NL-24	89.8	Volunteer	New London	100%	3 of 3	29.4 h	24 h
199	StorrsSTRC3	89.8	Cooperative	Tolland	71.4%	5 of 7	23 min	36 h
200	GuilfordGULC3	89.8	Cooperative	New Haven	71.4%	5 of 7	53 min	2 days
201	West Thompson Lake / USCOE DamWTPC3	89.8	Cooperative	Windham	71.4%	5 of 7	1.5 h	36 h
202	Middletown 1.3 WNWCT-MD-49	88.2	Volunteer	Middlesex	66.6%	2 of 3	26 min	36 h
203	Darien 2.4 NWCT-FR-83	88.2	Volunteer	Fairfield	66.6%	2 of 3	26 min	37 h
204	Bloomfield 1.4 ENECT-HR-134	88.2	Volunteer	Hartford	66.6%	2 of 3	86 min	36 h
204	New Preston 3.1 ENECT-LT-52	88.2	Volunteer	Litchfield	66.6%	2 of 3	86 min	36 h
206	Prospect 1.1 SSWCT-NH-104	88.2	Volunteer	New Haven	66.6%	2 of 3	86 min	37 h
207	Stonington 0.5 NNECT-NL-18	88.2	Volunteer	New London	66.6%	2 of 3	86 min	2 days
208	Suffield Depot 6.0 WNWCT-HR-88	88.1	Volunteer	Hartford	66.6%	2 of 3	2.4 h	37 h
209	Hebron 5.3 NWCT-TL-18	88.1	Volunteer	Tolland	66.6%	2 of 3	2.4 h	2 days
210	SALEM - Rt82 at Salem Salt Shed CT US CTDOTCT030	88.0	Road	New London	80.6%	280 of 347	28 min	2.3 h
211	MANSFIELD - 6WB - East of Mansfi CT US CTDOTCT035	87.8	Road	Tolland	80.6%	280 of 347	28 min	2.5 h
212	Somers 1.2 NECT-TL-49	87.7	Volunteer	Tolland	66.6%	2 of 3	3.4 h	2 days
213	Winsted 3.8 ESECT-LT-43	87.2	Volunteer	Litchfield	66.6%	2 of 3	4.4 h	37 h
214	UNION - Route 171 at Bigelow Hol CT US CTDOTCT041	86.8	Road	Tolland	76.9%	388 of 504	22 min	2.3 h
215	Chester Center 2.7 WNWCT-MD-30	86.8	Volunteer	Middlesex	66.6%	2 of 3	5.4 h	2 days
216	Southington 0.9 SSECT-HR-23	86.3	Volunteer	Hartford	66.6%	2 of 3	6.4 h	37 h
217	Southwood Acres 0.3 WSWCT-HR-106	85.8	Volunteer	Hartford	66.6%	2 of 3	7.4 h	2 days
218	Newtown 4.6 SECT-FR-65	85.4	Volunteer	Fairfield	66.6%	2 of 3	8.4 h	37 h
218	Madison Center 1.6 WNWCT-NH-88	85.4	Volunteer	New Haven	66.6%	2 of 3	8.4 h	37 h
220	Meriden Markham Muni AirportMMK	85.3	Airport	New Haven	63.1%	219 of 347	6 min	2 h
221	South Windham 1.3 NNECT-WN-10	84.9	Volunteer	Windham	66.6%	2 of 3	9.4 h	2 days
222	Old Lyme 0.5 WCT-NL-44	84.0	Volunteer	New London	66.6%	2 of 3	11.4 h	35 h
223	GROTON - I95WB - In Median East CT US CTDOTCT004	83.4	Road	New London	70.4%	338 of 480	28 min	2.3 h
224	Newtown 5.3 SCT-FR-96	83.0	Volunteer	Fairfield	66.6%	2 of 3	13.4 h	37 h
225	MIDDLETOWN - RT9NB - On ramp fro CT US CTDOTCT002	82.9	Road	Middlesex	68.7%	330 of 480	28 min	2.3 h
226	TORRINGTON - Rt8 SB - Median Sou CT US CTDOTCT019	82.7	Road	Litchfield	68.3%	328 of 480	28 min	2.3 h
227	AVON - Rt44WB - Avon Mountain Rd CT US CTDOTCT013	82.6	Road	Hartford	68.1%	327 of 480	28 min	2.3 h
228	THOMPSON - I395SB - At Exit 99CT006	82.6	Road	Windham	68.1%	327 of 480	28 min	2.3 h
229	Bristol 2.8 NNECT-HR-128	82.6	Volunteer	Hartford	66.6%	2 of 3	14.4 h	37 h
230	NEW HAVEN - I95SB - At Fulton Te CT US CTDOTCT011	81.8	Road	New Haven	65.8%	316 of 480	28 min	2.4 h
231	Sterling 2.6 NCT-WN-25	81.7	Volunteer	Windham	66.6%	2 of 3	16.4 h	37 h
232	Shelton 1.3 WCT-FR-23	81.7	Volunteer	Fairfield	66.6%	2 of 3	16.4 h	2 days
232	Norwalk 2.9 NNWCT-FR-25	81.7	Volunteer	Fairfield	66.6%	2 of 3	16.4 h	2 days
232	Windsor Locks 3.2 SWCT-HR-102	81.7	Volunteer	Hartford	66.6%	2 of 3	16.4 h	2 days
232	Waterbury 1.3 WNWCT-NH-67	81.7	Volunteer	New Haven	66.6%	2 of 3	16.4 h	2 days
232	Ashford 3.1 SWCT-WN-33	81.7	Volunteer	Windham	66.6%	2 of 3	16.4 h	2 days
237	Litchfield 2.3 NNECT-LT-7	81.7	Volunteer	Litchfield	66.6%	2 of 3	16.4 h	3 days
238	Woodbury Center 0.6 SWCT-LT-57	80.7	Volunteer	Litchfield	66.6%	2 of 3	18.4 h	39 h
239	DanburryDANC3	77.4	Cooperative	Fairfield	42.8%	3 of 7	7.7 h	3 days
240	NORFOLK - Rt44WB - Greenwoods Ro CT US CTDOTCT016	77.0	Road	Litchfield	61.0%	293 of 480	28 min	6.3 h
241	Bethel 0.5 ECT-FR-43	76.5	Volunteer	Fairfield	33.3%	1 of 3	26 min	2.5 days
242	Suffield 0.5 NNECT-HR-82	76.5	Volunteer	Hartford	33.3%	1 of 3	2.4 h	2.5 days
242	Old Lyme 1.7 NNECT-NL-63	76.5	Volunteer	New London	33.3%	1 of 3	2.4 h	2.5 days
244	Central Somers 0.3 NCT-TL-15	76.5	Volunteer	Tolland	33.3%	1 of 3	2.4 h	2.6 days
244	Somers 0.3 SCT-TL-41	76.5	Volunteer	Tolland	33.3%	1 of 3	2.4 h	2.6 days
246	PLAINFIELD - I395NB - At Plainfi CT US CTDOTCT028	75.4	Road	Windham	44.3%	149 of 336	28 min	2.3 h
247	NORTH STONINGTON - I95NB - At Ex CT US CTDOTCT025	74.3	Road	New London	44.0%	148 of 336	28 min	2.3 h
248	South Windsor 1.1 NECT-HR-155	71.4	Volunteer	Hartford	33.3%	1 of 3	13.4 h	2 days
249	Salem 3.6 SECT-NL-62	70.8	Volunteer	New London	33.3%	1 of 3	14.4 h	3.1 days
250	Trumbull 0.9 WCT-FR-57	70.0	Volunteer	Fairfield	33.3%	1 of 3	16.4 h	2.5 days

How a station is ranked

The 247 Rank answers one question about a weather station: can its readings be relied on? A station has to deliver: its reports arrive when due, soon, without long silences. And its readings have to be right: close to a trusted station nearby, passing their checks, and in step with the weather the forecast and its neighbours confirm.

The 247 score

Storm Station's poller asks every network on its own schedule, around the clock, and keeps the time of every report it hears; the reference comparison and the forecast engine keep the rest. From the last seven days of that record each station is scored out of 100 on six parts, and its 247 score is their weighted mean:

Reports receivedweight 35The share of its scheduled reports received. A station that sends every 5 minutes is due 2,016 reports in a week; one that reports once a day is due 7. Each report is counted in a slot centred on the station's own report time, so a report a minute early or late is still on time, and the week ends an hour back, so a report still on its way is never counted missed.Full marks: 100% received. No marks: none received.
Arrivalweight 10The median time its reports took to arrive from the moment a reading was taken to the moment it reached Storm Station.Full marks: within 10 minutes, or a tenth of its schedule for a station that reports less often. No marks: an hour, or its whole schedule.
Continuityweight 10Its longest silence against its own schedule, so a daily gauge is not marked down for a day between reports.Full marks: a silence of 3 reports or less. No marks: 72 reports, falling evenly on a log scale between.
Accuracyweight 20How closely its temperature follows its reference station the nearest airport or climate reference station that reported within half an hour, up to 15 miles away, reading by reading. A steady offset is taken out, and where both heights are known only the offset beyond 3 F that the height difference does not explain is counted.Full marks: within 1.5 F, allowing 0.1 F more for each mile to the reference. No marks: 6.5 F beyond that.
Instrument checksweight 15The share of its readings that pass a check. For an airfield, the check the forecast engine runs the next day: each reading against the stations around it, as weather services check their own. For any other station, a reading 20 F or more from its reference fails, unless the two stand 3,000 ft or more apart.Full marks: none failed. No marks: 5% failed.
Forecast checkweight 10How closely its temperature matched Storm Station's forecast for the same hours, checked the next day, for every airfield the forecast engine scores. A station whose readings stray far from a forecast its neighbours confirm is one to doubt.Full marks: within 2 F on average. No marks: 8 F.

A part is scored once the week holds 24 readings or comparisons for it. A part that cannot be measured where a station stands counts at the middle of its state's measured stations, so the station is neither lifted nor sunk by it. A part measured nowhere in the state is left out, and the others carry its weight.

From score to rank

Each state's stations are ranked by their score, to the tenth. At an equal score the longer record comes first: a station that sent 2,016 of 2,016 reports has shown more than one that sent 7 of 7. Then the faster arrival, then the shorter silence. Ties on all of them share a rank, as a race is scored: three stations tied for third are all third, and the next is sixth.

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. The rank is made again every day, so a station that falls silent or starts to read wrong drops, and one that recovers climbs back. Every page shows the same ranking: a station's rank here, in its state's list and on its own page come from one run, and a new run reaches them together. Each station's page shows its score part by part, with the figures behind each.

The same figures as data

/api/ranks for a state and /api/rank for one station, its score in parts; the developer page has every field.