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.

Mostly Cloudy

10°F

-12°C

Humidity 72%
Wind Speed NW 14 mph
Barometer 30.56 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 23 Feb 2:55 am CST
Extended Forecast for

4 Miles WNW Donnellson IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 8. Wind chill values as low as -5. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 8 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 28. Wind chill values as low as -5. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 28 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. Light and variable wind becoming south 10 to 15 mph in the evening. Winds could gust as high as 20 mph.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph.

    High: 52 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Snow likely before 9pm, then rain and snow likely between 9pm and 3am, then snow likely after 3am. Mostly cloudy, with a low around 25. Chance of precipitation is 70%.

    Low: 25 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 8. Wind chill values as low as -5. Northwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 28. Wind chill values as low as -5. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 18. Light and variable wind becoming south 10 to 15 mph in the evening. Winds could gust as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 52. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Snow likely before 9pm, then rain and snow likely between 9pm and 3am, then snow likely after 3am. Mostly cloudy, with a low around 25. Chance of precipitation is 70%.
Thursday
Mostly sunny, with a high near 43.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 31.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Donnellson IA
 40.68°N 91.64°W (Elev. 712 ft)
Last Update:
2:57 am CST Feb 23, 2026
Forecast Valid:
3am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation