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

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

36°F

2°C

Humidity 93%
Wind Speed S 10 mph
Barometer 30.00 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 8 Mar 1:55 am CDT
Extended Forecast for

Donnellson IA

  • Overnight

    Overnight: Mostly clear, with a low around 33. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 65 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 45. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely and possibly a thunderstorm, mainly after 3pm. Partly sunny, with a high near 78. Chance of precipitation is 70%.

    High: 78 °F

    Mostly Sunny
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 41. Chance of precipitation is 90%.

    Low: 41 °F

    T-storms then
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before noon. Mostly cloudy, with a high near 50. Chance of precipitation is 70%.

    High: 50 °F

    Rain Likely
    then Chance
    Rain

  • Wednesday Night

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

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 33. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 65. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 45. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 73. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Rain likely and possibly a thunderstorm, mainly after 3pm. Partly sunny, with a high near 78. Chance of precipitation is 70%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 41. Chance of precipitation is 90%.
Wednesday
Rain likely, mainly before noon. Mostly cloudy, with a high near 50. Chance of precipitation is 70%.
Wednesday Night
Mostly clear, with a low around 26.
Thursday
Partly sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Partly sunny, with a high near 58.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Mostly cloudy, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.66°N 91.56°W (Elev. 699 ft)
Last Update:
12:26 am CST Mar 8, 2026
Forecast Valid:
1am CST Mar 8, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
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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