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

66°F

19°C

Humidity 78%
Wind Speed W 3 mph
Barometer 29.89 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Jun 9:35 pm CDT
Extended Forecast for

3 Miles W Donnellson IA

  • Tonight

    Tonight: Mostly clear, with a low around 56. West wind around 5 mph.

    Low: 56 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 82. West wind around 5 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 63. New precipitation amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 7am. Some of the storms could produce heavy rainfall. High near 75. Chance of precipitation is 90%. New rainfall amounts between 2 and 3 inches possible.

    High: 75 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 56. West wind around 5 mph.
Juneteenth
Sunny, with a high near 82. West wind around 5 mph.
Friday Night
Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 63. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers, with thunderstorms also possible after 7am. Some of the storms could produce heavy rainfall. High near 75. Chance of precipitation is 90%. New rainfall amounts between 2 and 3 inches possible.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Donnellson IA
 40.64°N 91.62°W (Elev. 699 ft)
Last Update:
9:02 pm CDT Jun 18, 2026
Forecast Valid:
9pm CDT Jun 18, 2026-6pm CDT Jun 25, 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