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Duncan, Iowa

Community in Hancock County, Iowa

Precipitation

What has fallen at Duncan

0.90 in in the last 24 hours, and none in the 2 days before, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.90in
Last 3 days
0.90in

Visibility

How far you can see at Duncan, the next 44 hours

Visibility stays 5 miles or more through Sat 7 PM, lowest 6 miles Fri 6 AM.

FriSat

On the radar over Duncan, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Duncan, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.2 miles away.

measured now3 instruments

LelandRLDI4

Beside a road/18.8 mi away/1,270 ft/25 ft above here

temp, pavement temp, wind, visibility, precip

Rank661of 1,060

measured daily2 instruments

Britt 8.2 NNWIA-HN-8

In a volunteer observer's own ground/9.9 mi away/1,332 ft/87 ft above here

precip, snowfall, snow depth

Rank-

KanawhaKANI4

At a cooperative observer's station/12.7 mi away/1,181 ft/64 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Forest City, drawn

The nearest airport reporting now, 9.9 mi from Duncan, Iowa. From its report of Oct 15, 2026, 11:30 PM local time: 3 of its 6 sheets.

The sky

Scattered at 2,500 ft, scattered at 3,300 ft, overcast at 5,000 ft; the ceiling is 5,000 ft; visibility 10 mi or more.

Section of the sky over Forest City, height above the station to scale: scattered cloud with its base at 2,500 feet, scattered cloud with its base at 3,300 feet, overcast cloud with its base at 5,000 feet, the ceiling at 5,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FXYFIG. A THE SKY OVER FOREST CITYSECTION, 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 5,000 FTOVERCAST, 8 EIGHTHS OF THE SKYSCT 3,300 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYSCT 2,500 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 5,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEForest City, the skySTATION REPORT · ASOS FXYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FXY-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

44.6 F with a dew point of 37.4 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 2,500 ft.

Chart of the air at Forest City: temperature 44.6 degrees Fahrenheit and dew point 37.4, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 2,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FXYFIG. B THE AIR AT FOREST CITYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00020 F30 F40 F50 F60 FSATURATES 1,600 FT ABOVE THE STATION, AT 35.8 FLOWEST CLOUD REPORTED, SCT 2,500 FTTEMPERATURE 44.6 FDEW POINT 37.4 FSPREAD 7.2 FRELATIVE HUMIDITY 76 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 POINTTITLEForest City, the airSTATION REPORT · ASOS FXYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FXY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 18 mph, gusting 24 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 29 mph.

Plan of the wind at Forest City, north up: blowing from 290 degrees, the west northwest, at 18 miles an hour, gusting 24; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FXYFIG. C THE WIND AT FOREST CITYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 18 MPH5FRESH BREEZE19GUST, 24 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEForest City, the windSTATION REPORT · ASOS FXYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FXY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Iowa

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

Near Duncan

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

Near Duncan

River and lake gauges