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.

Mostly Cloudy

70°F

21°C

Humidity 69%
Wind Speed SE 5 mph
Barometer 30.19 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 15 Oct 12:15 pm CDT
Extended Forecast for

Denmark IA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 76. Southeast wind around 5 mph becoming calm.

    High: 76 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. East wind 5 to 10 mph.

    Low: 57 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79. Southeast wind 5 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 60. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers. Partly sunny, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Partly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 76. Southeast wind around 5 mph becoming calm.
Tonight
Mostly cloudy, with a low around 57. East wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 79. Southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 60. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 81.
Friday Night
A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 60. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 70.
Saturday Night
A 50 percent chance of showers. Partly cloudy, with a low around 45.
Sunday
Sunny, with a high near 62.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 69.
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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:
12:12 pm CDT Oct 15, 2025
Forecast Valid:
12pm CDT Oct 15, 2025-6pm CDT Oct 21, 2025
 
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