Severe Weather and Flooding Threats for the Central U.S.; Dangerous Heat in the Southern and Western U.S.

Severe weather and flooding threats will continue for portions of the central U.S. over the next couple of days, with multiple rounds of thunderstorms expected. Dangerous heat will persist across the southern and western U.S. through mid-week. Hot and dry conditions will fuel fire weather concerns for the Intermountain West, where dry thunderstorms may spark additional wildfires. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

A Few Clouds

82°F

28°C

Humidity 58%
Wind Speed SW 12 mph
Barometer 29.95 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 24 Jun 4:55 pm CDT
Extended Forecast for

Donnellson IA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 82. West wind around 5 mph.

    High: 82 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 62. West wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between 11am and noon.  Mostly cloudy, with a high near 81. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 63. East wind around 5 mph.  Chance of precipitation is 70%.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: A chance of showers before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers after 1pm.  Mostly cloudy, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82. West wind around 5 mph.
Tonight
Partly cloudy, with a low around 62. West wind around 5 mph becoming calm in the evening.
Thursday
A slight chance of showers between 11am and noon. Mostly cloudy, with a high near 81. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 63. East wind around 5 mph. Chance of precipitation is 70%.
Friday
A chance of showers before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 63.
Saturday
Partly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.64°N 91.56°W (Elev. 705 ft)
5:01 pm CDT Jun 24, 2026
5pm CDT Jun 24, 2026-6pm CDT Jul 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