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

75°F

24°C

Humidity 54%
Wind Speed S 7 mph
Barometer 29.97 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 11 Oct 11:35 am CDT
Extended Forecast for

Denmark IA

  • Today

    Today: Sunny, with a high near 87. South wind 5 to 10 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 67. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Sunny, with a high near 88. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 70. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers, mainly after 1am. Low around 63. Chance of precipitation is 80%.

    Low: 63 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely. Cloudy, with a high near 70. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 87. South wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 67. South wind 5 to 10 mph, with gusts as high as 20 mph.
Columbus Day
Sunny, with a high near 88. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Clear, with a low around 70. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Showers, mainly after 1am. Low around 63. Chance of precipitation is 80%.
Wednesday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Thursday
Showers likely. Cloudy, with a high near 70. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Denmark IA
 40.74°N 91.35°W (Elev. 732 ft)
Last Update:
8:52 am CDT Oct 11, 2026
Forecast Valid:
11am CDT Oct 11, 2026-6pm CDT Oct 17, 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