Storm Station
Donnellson, Iowa
59°
Light rain· Feels like 59°·Light air 2 mph N
A chance of rain showers. Mostly cloudy, with a low around 58. East wind around 0 mph. Chance of precipitation is 40%.
-UV
-Air quality
81%Humidity
66%Cloud

What is measuring near here

The 5 instruments nearest Donnellson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now3 instruments

ArgyleRARI4

Beside a road/12.3 mi away/518 ft/186 ft below here

temp, pavement temp, wind, visibility, precip

Rank208of 652

Fort MadisonFSW

At an airfield/12.6 mi away/722 ft/18 ft above here

temp, wind, gust, visibility, precip, pressure

Rank209of 652

measured daily2 instruments

Donnellson 0.2 WSWIA-LE-23

In a volunteer observer's own ground/0.1 mi away/706 ft/2 ft above here

precip, snowfall, snow depth

Rank-

DonnellsonDNNI4

At a cooperative observer's station/0.6 mi away/696 ft/8 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Fort Madison, drawn

The nearest airport reporting now, 12.6 mi from Donnellson. From its report of Sep 27, 2026, 3:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 6,500 ft; the ceiling is 6,500 ft; visibility 9 mi.

Section of the sky over Fort Madison, height above the station to scale: overcast cloud with its base at 6,500 feet, the ceiling at 6,500 feet, and visibility of 9 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FSWFIG. A THE SKY OVER FORT MADISONSECTION, 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 STATION02,5005,0007,50010,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 6,500 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 6,500 FTVISIBILITY, MILES: 9 MI0510TITLEFort Madison, the skySTATION REPORT · ASOS FSWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-FSW-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

59.0 F with a dew point of 57.2 F, 94 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up; the lowest cloud reported is at 6,500 ft.

Chart of the air at Fort Madison: temperature 59.0 degrees Fahrenheit and dew point 57.2, 94 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station, against the lowest cloud reported at 6,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FSWFIG. B THE AIR AT FORT MADISONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00050 F60 F70 FSATURATES 400 FT ABOVE THE STATION, AT 56.7 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, OVC 6,500 FTTEMPERATURE AND DEW POINT 59.0 F, 57.2 FRELATIVE HUMIDITY 94 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 POINTTITLEFort Madison, the airSTATION REPORT · ASOS FSWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-FSW-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

At 1 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Fort Madison, north up: at 1 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FSWFIG. C THE WIND AT FORT MADISONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONDIRECTION NOT REPORTEDBEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 1 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFort Madison, the windSTATION REPORT · ASOS FSWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-FSW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Donnellson (DNNI4), 0.6 miles from here, read 26 Sep, 07:00. measured daily

Elsewhere in Iowa

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

Near Donnellson

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