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.

Mostly Cloudy

52°F

11°C

Humidity 50%
Wind Speed W 7 mph
Barometer 29.89 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 5 May 12:15 pm CDT
Extended Forecast for

Donnellson IA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly cloudy, with a high near 58. Northwest wind 5 to 10 mph.

    High: 58 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 41. Northwest wind around 5 mph.

    Low: 41 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 59. North wind 5 to 10 mph.

    High: 59 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. Northwest wind around 5 mph.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers after 1pm. Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a high near 58. Northwest wind 5 to 10 mph.
Tonight
A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 41. Northwest wind around 5 mph.
Wednesday
Mostly cloudy, with a high near 59. North wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 38. Northwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 48.
Friday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Sunny, with a high near 77.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.64°N 91.56°W (Elev. 705 ft)
Last Update:
12:26 pm CDT May 5, 2026
Forecast Valid:
12pm CDT May 5, 2026-6pm CDT May 11, 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