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

68°F

20°C

Humidity 94%
Wind Speed NE 3 mph
Barometer 29.94 in
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Last update 14 Jun 12:35 am CDT
Extended Forecast for

4 Miles NW Donnellson IA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Northeast wind around 5 mph.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65. Calm wind becoming east around 5 mph after midnight.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Southeast wind around 5 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 65. Calm wind.
Saturday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Northeast wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 65. Calm wind becoming east around 5 mph after midnight.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Southeast wind around 5 mph.
Sunday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 66.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Juneteenth
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Donnellson IA
 40.68°N 91.61°W (Elev. 650 ft)
Last Update:
12:46 am CDT Jun 14, 2025
Forecast Valid:
12am CDT Jun 14, 2025-6pm CDT Jun 20, 2025
 
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