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

82°F

28°C

Humidity 25%
Wind Speed SE 8 mph
Barometer 30.16 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 3 Jun 5:55 pm CDT
Extended Forecast for

Fort Madison IA

  • Tonight

    Tonight: Mostly clear, with a low around 60. South wind 5 to 10 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 88. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 67. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 86. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 86 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Saturday

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

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 60. South wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 88. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 67. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 86. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
Saturday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 67.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 67.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Madison IA
 40.61°N 91.36°W (Elev. 518 ft)
Last Update:
5:46 pm CDT Jun 3, 2026
Forecast Valid:
6pm CDT Jun 3, 2026-6pm CDT Jun 10, 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