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.

A Few Clouds

79°F

26°C

Humidity 79%
Wind Speed SW 8 mph
Barometer 29.90 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 6 Jun 9:15 am CDT
Extended Forecast for

Donnellson IA

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. Southwest wind around 5 mph.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 66. South wind around 5 mph.

    Low: 66 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 85. Southeast wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 66. Southeast wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 66 °F

    Showers

  • Monday

    Monday: Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 86. Chance of precipitation is 80%.

    High: 86 °F

    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. Southwest wind around 5 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 66. South wind around 5 mph.
Sunday
Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 85. Southeast wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm. Low around 66. Southeast wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Monday
Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 86. Chance of precipitation is 80%.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Mostly sunny and hot, with a high near 95.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.64°N 91.56°W (Elev. 705 ft)
Last Update:
8:16 am CDT Jun 6, 2026
Forecast Valid:
9am CDT Jun 6, 2026-6pm CDT Jun 12, 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