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.

Partly Cloudy

14°F

-10°C

Humidity 67%
Wind Speed NW 20 G 25 mph
Barometer 30.55 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 22 Feb 9:15 pm CST
Extended Forecast for

Denmark IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 9. Wind chill values as low as -5. Northwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 9 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 29. Wind chill values as low as -5. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 18. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 18 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 49. South wind around 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.

    High: 49 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain and snow likely, mainly before midnight. Mostly cloudy, with a low around 24. Chance of precipitation is 70%.

    Low: 24 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 9. Wind chill values as low as -5. Northwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 29. Wind chill values as low as -5. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Increasing clouds, with a low around 18. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 49. South wind around 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 44.
Wednesday Night
Rain and snow likely, mainly before midnight. Mostly cloudy, with a low around 24. Chance of precipitation is 70%.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Mostly clear, with a low around 25.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 34.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Denmark IA
 40.74°N 91.35°W (Elev. 732 ft)
Last Update:
8:32 pm CST Feb 22, 2026
Forecast Valid:
9pm CST Feb 22, 2026-6pm CST Mar 1, 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