Storm Station
Garnavillo, Iowa
58° 67°/55°
Overcast· Feels like 58°·Light breeze 5 mph ESE
A chance of rain showers. Mostly cloudy, with a low around 56. Southeast wind around 3 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
0UV Low
-Air quality
83%Humidity
100%Cloud
Now
3:30 AM
58feels58
now, overcast
Today
Sep 27
6755
10%
overcast
Mon
Sep 28
7255
overcast
Tue
Sep 29
7051
59%
rain
Wed
Sep 30
6361
65%
13mph
showers light
Thu
Oct 1
6348
51%
15mph
showers light
Fri
Oct 2
5940
25%
mostly clear day
Sat
Oct 3
6238
22%
13mph
overcast
58°
67°55°
72°55°
70°51°
63°61°
63°48°
59°40°
62°38°

As of 3:30 AM in Garnavillo, Iowa.

What is measuring near here

The 5 instruments nearest Garnavillo, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.8 miles away.

measured now3 instruments

Manchester (US 20)RMNI4

Beside a road/29.4 mi away/1,014 ft/46 ft below here

temp, pavement temp, wind, visibility, precip

Rank564of 652

DecorahDEH

At an airfield/38.1 mi away/1,157 ft/97 ft above here

temp, wind, gust, visibility, precip, pressure

Rank211of 652

measured daily2 instruments

Guttenberg 0.9 NNWIA-CT-10

In a volunteer observer's own ground/7.8 mi away/925 ft/135 ft below here

precip, snowfall, snow depth

Rank-

Guttenberg L & D 10GTTI4

At a cooperative observer's station/9.0 mi away/636 ft/424 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Decorah, drawn

The nearest airport reporting now, 38.1 mi from Garnavillo. From its report of Sep 27, 2026, 3:15 AM local time: 3 of its 6 sheets.

The sky

Overcast at 4,700 ft; the ceiling is 4,700 ft; visibility 10 mi or more.

Section of the sky over Decorah, height above the station to scale: overcast cloud with its base at 4,700 feet, the ceiling at 4,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DEHFIG. A THE SKY OVER DECORAHSECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,700 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 4,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEDecorah, the skySTATION REPORT · ASOS DEHTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-DEH-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

59.0 F with a dew point of 55.4 F, 88 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 4,700 ft.

Chart of the air at Decorah: temperature 59.0 degrees Fahrenheit and dew point 55.4, 88 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 4,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DEHFIG. B THE AIR AT DECORAHTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00040 F50 F60 F70 FSATURATES 800 FT ABOVE THE STATION, AT 54.6 FLOWEST CLOUD REPORTED, OVC 4,700 FTTEMPERATURE 59.0 FDEW POINT 55.4 FSPREAD 3.6 FRELATIVE HUMIDITY 88 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLEDecorah, the airSTATION REPORT · ASOS DEHTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-DEH-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (150 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Decorah, north up: blowing from 150 degrees, the south southeast, at 5 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DEHFIG. C THE WIND AT DECORAHPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 150°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDecorah, the windSTATION REPORT · ASOS DEHTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-DEH-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Decorah, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Guttenberg L & D 10 (GTTI4), 9.0 miles from here, read 26 Sep, 06:30. measured daily

Elsewhere in Iowa

15 places, each with its own forecast and its own instruments.

Near Garnavillo

The nearest places, each with its own forecast and the instruments nearest it.