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

73°F

23°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.89 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 16 Jul 2:15 am CDT
Extended Forecast for

4 Miles SSW Denmark IA

  • Overnight

    Overnight: Partly cloudy, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. Heat index values as high as 100. South wind 5 to 10 mph becoming west in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. West wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 66 °F

    T-storms
    Likely

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 75. North wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 72. South wind around 5 mph.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. Heat index values as high as 100. South wind 5 to 10 mph becoming west in the afternoon.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. West wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 75. North wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 63.
Friday
Partly sunny, with a high near 79.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Denmark IA
 40.7°N 91.35°W (Elev. 725 ft)
Last Update:
1:16 am CDT Jul 16, 2025
Forecast Valid:
2am CDT Jul 16, 2025-6pm CDT Jul 22, 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