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.

Fair

9°F

-13°C

Humidity 72%
Wind Speed W 12 mph
Barometer 30.17 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 17 Mar 3:35 am CDT
Extended Forecast for

Donnellson IA

  • Overnight

    Overnight: Mostly clear, with a low around 7. Wind chill values as low as -5. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 7 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 28. Wind chill values as low as -5. Northwest wind 5 to 10 mph becoming south in the afternoon.

    High: 28 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 27. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 27 °F

    Snow Likely
    then Chance
    Snow

  • Wednesday

    Wednesday: Sunny, with a high near 51. South wind around 5 mph becoming west in the afternoon.

    High: 51 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 7. Wind chill values as low as -5. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 28. Wind chill values as low as -5. Northwest wind 5 to 10 mph becoming south in the afternoon.
Tuesday Night
Snow likely, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 27. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Wednesday
Sunny, with a high near 51. South wind around 5 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Partly sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Donnellson IA
 40.64°N 91.56°W (Elev. 705 ft)
Last Update:
3:13 am CDT Mar 17, 2026
Forecast Valid:
3am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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