Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

88°F

31°C

Humidity 79%
Wind Speed NW 3 mph
Barometer 29.90 in
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 26 Jul 1:35 pm CDT
Extended Forecast for

Fort Madison IA

Extreme Heat Warning July 26, 01:50pm until July 27, 10:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 26, 01:50pm until July 27, 10:00pm

    NOW until 10:00pm Mon

    Extreme Heat Warning

  • This Afternoon

    High: 93 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 10pm.  Mostly cloudy, with a low around 77. Southwest wind around 5 mph.

    Low: 77 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny and hot, with a high near 96. Heat index values as high as 113. South wind 5 to 10 mph.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75. Northwest wind around 5 mph.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms between 2pm and 4pm. Partly sunny, with a high near 93. Heat index values as high as 112. West wind around 5 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 77. Southwest wind around 5 mph.
Monday
Mostly sunny and hot, with a high near 96. Heat index values as high as 113. South wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 75. Northwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 80.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 82.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Madison IA
 40.63°N 91.35°W (Elev. 541 ft)
1:27 pm CDT Jul 26, 2026
1pm CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
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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