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

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fog/Mist

43°F

6°C

Humidity 93%
Wind Speed NE 7 mph
Barometer 30.14 in
Dewpoint 41°F (5°C)
Visibility 6.00 mi
Wind Chill39°F (4°C)
Last update 3 Mar 9:15 pm CST
Extended Forecast for

Donnellson IA

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 4am, then a chance of rain after 4am. Cloudy, with a low around 38. Northeast wind around 5 mph. Chance of precipitation is 50%.

    Low: 38 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain before noon, then a chance of showers after noon. Cloudy, with a high near 51. Northeast wind around 5 mph. Chance of precipitation is 40%.

    High: 51 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Patchy fog after 9pm. Low around 42. Calm wind becoming northwest around 5 mph. Chance of precipitation is 80%.

    Low: 42 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: A 30 percent chance of showers before noon. Mostly cloudy, then gradually becoming sunny, with a high near 62. Northwest wind around 5 mph becoming south in the afternoon.

    High: 62 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm, mainly after 3am. Partly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Mostly Clear
    then Rain
    Likely

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 74. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 74 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 46. Chance of precipitation is 80%.

    Low: 46 °F

    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 4am, then a chance of rain after 4am. Cloudy, with a low around 38. Northeast wind around 5 mph. Chance of precipitation is 50%.
Wednesday
A chance of rain before noon, then a chance of showers after noon. Cloudy, with a high near 51. Northeast wind around 5 mph. Chance of precipitation is 40%.
Wednesday Night
Showers and possibly a thunderstorm. Patchy fog after 9pm. Low around 42. Calm wind becoming northwest around 5 mph. Chance of precipitation is 80%.
Thursday
A 30 percent chance of showers before noon. Mostly cloudy, then gradually becoming sunny, with a high near 62. Northwest wind around 5 mph becoming south in the afternoon.
Thursday Night
Rain likely and possibly a thunderstorm, mainly after 3am. Partly cloudy, with a low around 48. Chance of precipitation is 60%.
Friday
Rain and possibly a thunderstorm. High near 74. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm. Low around 46. Chance of precipitation is 80%.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 52.
Tuesday
A 50 percent chance of rain. Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.64°N 91.56°W (Elev. 705 ft)
Last Update:
7:06 pm CST Mar 3, 2026
Forecast Valid:
9pm CST Mar 3, 2026-6pm CDT Mar 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