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

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

55°F

13°C

Humidity 44%
Wind Speed SE 6 mph
Barometer 29.80 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 7 Jan 5:35 pm CST
Extended Forecast for

Denmark IA

  • Tonight

    Tonight: Increasing clouds, with a low around 40. South wind 5 to 10 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain, mainly after 9am. High near 57. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Rain Likely
    then Rain

  • Thursday Night

    Thursday Night: Rain likely before midnight. Mostly cloudy, with a low around 40. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

    Low: 40 °F

    Rain Likely
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 45. Northwest wind 5 to 10 mph becoming north in the afternoon.

    High: 45 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of rain before 3am, then a chance of rain and snow. Cloudy, with a low around 32. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 32 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Partly sunny, with a high near 37.

    High: 37 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 40. South wind 5 to 10 mph.
Thursday
Rain, mainly after 9am. High near 57. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain likely before midnight. Mostly cloudy, with a low around 40. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Friday
Mostly cloudy, with a high near 45. Northwest wind 5 to 10 mph becoming north in the afternoon.
Friday Night
A chance of rain before 3am, then a chance of rain and snow. Cloudy, with a low around 32. Chance of precipitation is 50%. Little or no snow accumulation expected.
Saturday
A 40 percent chance of snow. Partly sunny, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Mostly clear, with a low around 22.
Monday
Mostly sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 31.
Wednesday
Mostly cloudy, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Denmark IA
 40.74°N 91.32°W (Elev. 699 ft)
Last Update:
3:16 pm CST Jan 7, 2026
Forecast Valid:
5pm CST Jan 7, 2026-6pm CST Jan 14, 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