National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

27°F

-3°C

Humidity 46%
Wind Speed NW 12 mph
Barometer 30.54 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 23 Feb 12:35 pm CST
Extended Forecast for

Donnellson IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 29. Northwest wind 5 to 10 mph.

    High: 29 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 18. Light and variable wind becoming south 5 to 10 mph in the evening. Winds could gust as high as 20 mph.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Cloudy, with a high near 52. Breezy, with a south wind 10 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph.

    High: 52 °F

    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 24. Northwest wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain and snow likely, becoming all snow after 3am. Mostly cloudy, with a low around 26. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 29. Northwest wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 18. Light and variable wind becoming south 5 to 10 mph in the evening. Winds could gust as high as 20 mph.
Tuesday
Cloudy, with a high near 52. Breezy, with a south wind 10 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 24. Northwest wind 5 to 10 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Rain and snow likely, becoming all snow after 3am. Mostly cloudy, with a low around 26. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday
Mostly sunny, with a high near 43.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 32.
Saturday
Mostly sunny, with a high near 51.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 41.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.64°N 91.56°W (Elev. 705 ft)
Last Update:
10:31 am CST Feb 23, 2026
Forecast Valid:
12pm CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation