National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

75°F

24°C

Humidity 89%
Wind Speed N 2 mph
Barometer 29.97 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 27 Jun 9:15 pm CDT
Extended Forecast for

Fort Madison IA

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Calm wind becoming southeast around 5 mph.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 91. Calm wind becoming south around 5 mph in the morning.

    High: 91 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. South wind around 5 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. South wind around 5 mph.

    High: 88 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

    Low: 69 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Calm wind becoming southeast around 5 mph.
Saturday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 91. Calm wind becoming south around 5 mph in the morning.
Saturday Night
Mostly clear, with a low around 71. South wind around 5 mph.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. South wind around 5 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 70.
Independence Day
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Madison IA
 40.63°N 91.33°W (Elev. 525 ft)
Last Update:
6:46 pm CDT Jun 27, 2025
Forecast Valid:
9pm CDT Jun 27, 2025-6pm CDT Jul 4, 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