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

Heavy Rainfall Continues in South Florida, Southern Rockies, and the Northern Plains

A stationary front will continue to bring heavy to excessive rainfall to South Florida into Saturday with localized and urban flooding possible. Heavy to excessive rainfall is forecast through Saturday over the southern Rockies into the northern Plains. Instances of flash flooding are possible, especially in higher terrain and burn scars. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

90°F

32°C

Humidity 46%
Wind Speed SW 5 mph
Barometer 29.92 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 13 Sep 6:35 pm CDT
Extended Forecast for

Donnellson IA

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming east in the afternoon.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Calm wind becoming east around 5 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91. Southeast wind around 5 mph.

    High: 91 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming east in the afternoon.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Calm wind becoming east around 5 mph. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91. Southeast wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 64.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 60.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.66°N 91.56°W (Elev. 699 ft)
Last Update:
6:31 pm CDT Sep 13, 2025
Forecast Valid:
6pm CDT Sep 13, 2025-6pm CDT Sep 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