Live/247 Rank/Montana

Montana 24/7 Rank

Every station in Montana 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.

1,053 stations ranked32.0% sent every report dueranked October 16, 2026page 5 of 5Montana instrumentsMontana 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 1,053 ranked here, 965 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
1,000	Tiber Dam 7.6 SMT-LY-28	74.3	Volunteer	Liberty	42.8%	3 of 7	2.4 h	4 days
1,002	Harrison 1.0 ENEMT-MD-7	74.3	Volunteer	Madison	42.8%	3 of 7	3.4 h	3.5 days
1,003	Nashua 8.3 SSWMT-VL-4	74.2	Volunteer	Valley	57.1%	4 of 7	15.4 h	2.5 days
1,004	Madison River 8 WNW GraylingGRYM8	74.1	Gauge	Gallatin	67.8%	114 of 168	14 min	2.3 days
1,004	Madison River 18 NW West YellowstoneHBDM8	74.1	Gauge	Gallatin	67.8%	114 of 168	14 min	2.3 days
1,006	Lookout Pass I-90 MP 0.2MTLPS	73.9	Road	Mineral	70.5%	474 of 672	31 min	2.3 h
1,007	Clancy I-15 MP 182.5MTCLN	73.8	Road	Jefferson	70.3%	473 of 672	31 min	2.3 h
1,008	Ennis 0.3 SSEMT-MD-11	73.6	Volunteer	Madison	42.8%	3 of 7	85 min	5 days
1,009	West GlacierWGLM8	73.6	Cooperative	Flathead	42.8%	3 of 7	1.8 h	5 days
1,010	Dillon Agrimet StationDWSM8	73.1	Gauge	Beaverhead	100%	168 of 168	29 min	63 min
1,011	Glasgow Main Diversion Near VandaliaGMDM8	73.1	Gauge	Valley	60.7%	102 of 168	23 min	18 h
1,012	ZortmanZRTM8	73.1	Cooperative	Phillips	42.8%	3 of 7	3.6 h	5 days
1,013	Sieben I-15 MP 216MTSBN	72.7	Road	Lewis and Clark	67.4%	453 of 672	31 min	6.8 h
1,014	Citizen station EW6167EW6167	72.5	Citizen	Madison	49.3%	311 of 630	19 s	9.1 h
1,015	Citizen station EW8564EW8564	72.4	Citizen	Missoula	50.6%	124 of 245	20 s	7.7 h
1,016	HarlowtonUMHM8	72.3	Gauge	Wheatland	100%	168 of 168	24 min	78 min
1,017	Helena Valley Weather StationHVMM8	72.0	Gauge	Lewis & Clark	100%	168 of 168	29 min	63 min
1,018	Roundup 1.8 NNEMT-MH-18	72.0	Volunteer	Musselshell	42.8%	3 of 7	8.4 h	3.4 days
1,019	Buffalo Rapids-Glendive AgrimetBRGM8	71.9	Gauge	Dawson	98.8%	166 of 168	14 min	1.8 h
1,020	McDonalds MT-13 MP 125.5MTMCD	71.9	Road	Roosevelt	67.1%	451 of 672	31 min	8.3 h
1,021	Ronan 0.2 WSWMT-LK-13	71.7	Volunteer	Lake	42.8%	3 of 7	6.4 h	5 days
1,022	Homestake PassMTHOM	71.1	Road	Jefferson	70.5%	474 of 672	31 min	2.3 h
1,023	Joplin 11.0 NMT-LY-21	71.1	Volunteer	Liberty	42.8%	3 of 7	10.4 h	3.5 days
1,024	Glasgow Weather StationGWSM8	70.5	Gauge	Valley	100%	168 of 168	29 min	63 min
1,025	Kings Hill US_89 MP 28.5MTKIH	70.2	Road	Meagher	63.6%	428 of 672	31 min	10 h
1,026	Citizen station CW9353CW9353	70.2	Citizen	Sweet Grass	50.0%	112 of 224	18 s	6 h
1,027	Citizen station GW0007GW0007	70.0	Citizen	Sweet Grass	52.2%	117 of 224	18 s	8 h
1,028	Citizen station CW7710CW7710	70.0	Citizen	Gallatin	41.6%	105 of 252	24 s	16.4 h
1,029	MT-GR-8MT-GR-8	69.8	COCORAHS	-	42.8%	3 of 7	11.4 h	4.5 days
1,030	Broadus 12.3 SSEMT-PR-7	69.7	Volunteer	Powder River	42.8%	3 of 7	14.4 h	24 h
1,031	Butte - Montana TechMTTM8	69.3	Cooperative	Silver Bow	28.5%	2 of 7	57 min	4 days
1,032	Mildred 5NMLDM8	68.3	Cooperative	Prairie	42.8%	3 of 7	17.4 h	3 days
1,033	St. MaryMRYM8	66.8	Gauge	Glacier	52.3%	88 of 168	19 min	3.4 days
1,034	Bohemian Corner JCT MT-19/US-191 MT US MT DOTMTBOH	66.7	Road	Fergus	69.6%	468 of 672	31 min	2.3 h
1,035	Bridger Canyon MT-86 MP 16.7MTBDC	65.4	Road	Gallatin	70.3%	473 of 672	31 min	2.3 h
1,036	ColstripM46	65.3	Airport	Rosebud	74.8%	377 of 504	8 min	10.7 h
1,037	Virginia CityVACM8	65.2	Cooperative	Madison	42.8%	3 of 7	26.8 h	2.4 days
1,038	Fort Peck 0.5 SMT-VL-3	64.5	Volunteer	Valley	42.8%	3 of 7	31.4 h	3.8 days
1,039	Point Six RAWSPNTM8	63.8	Gauge	Missoula	100%	168 of 168	19 min	64 min
1,040	Stuart Mountain SnotelSTTM8	63.8	Gauge	Missoula	98.8%	166 of 168	39 min	2 h
1,041	St. Mary 1 SSW04130	63.0	Reference	Glacier	52.3%	44 of 84	1.5 h	3.4 days
1,042	SidneySDYM8	62.9	Cooperative	Richland	28.5%	2 of 7	16.3 h	4 days
1,043	Citizen station GW7683GW7683	61.7	Citizen	Valley	20.5%	414 of 2,016	17 s	3.5 h
1,044	Citizen station GW2298GW2298	61.6	Citizen	Missoula	20.2%	409 of 2,016	18 s	3.6 h
1,045	Citizen station GW6270GW6270	61.5	Citizen	Chouteau	20.2%	408 of 2,016	17 s	3.6 h
1,046	Citizen station GW0378GW0378	61.3	Citizen	Missoula	20.2%	408 of 2,016	19 s	3.7 h
1,047	Citizen station FW7359FW7359	60.9	Citizen	Lewis and Clark	29.3%	74 of 252	15 s	4.1 days
1,048	Citizen station EW5549EW5549	60.8	Citizen	Lewis and Clark	22.0%	371 of 1,680	18 s	3.6 h
1,049	Citizen station DW1223DW1223	60.2	Citizen	Flathead	20.1%	407 of 2,016	18 s	3.7 h
1,050	Moss Peak SnotelMSPM8	59.1	Gauge	Lake	98.8%	166 of 168	39 min	2 h
1,051	Ulm 2S - AgrimetULWM8	58.6	Gauge	Cascade	98.2%	165 of 168	24 min	4 h
1,052	Citizen station GW2344GW2344	58.1	Citizen	Missoula	20.4%	413 of 2,016	18 s	3.6 h
1,053	Citizen station FW1642FW1642	56.5	Citizen	Gallatin	20.5%	415 of 2,016	18 s	3.6 h

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; an airfield is compared with the nearest other airport, never its own report. 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.