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.

Overcast

75°F

24°C

Humidity 65%
Wind Speed S 17 G 22 mph
Barometer 29.72 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 15 Apr 4:35 pm CDT
Extended Forecast for

4 Miles SSW Denmark IA

Tornado Watch until April 15, 09:00pm
Click here for hazard details and duration
Tornado Watch
  •  
    Tornado Watch until April 15, 09:00pm

    NOW until 9:00pm Wed

    Tornado Watch

  • This Afternoon

    High: 75 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 9pm. Mostly cloudy, with a low around 57. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 77. West wind around 10 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. Southwest wind 5 to 10 mph becoming southeast in the evening.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 41. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 41 °F

    T-storms then
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75. South wind around 15 mph, with gusts as high as 20 mph.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Mostly cloudy, with a low around 57. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday
Sunny, with a high near 77. West wind around 10 mph.
Thursday Night
Mostly clear, with a low around 56. Southwest wind 5 to 10 mph becoming southeast in the evening.
Friday
Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 70%.
Friday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 41. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 58.
Sunday Night
Clear, with a low around 38.
Monday
Sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Sunny, with a high near 73.
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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:
3:47 pm CDT Apr 15, 2026
Forecast Valid:
4pm CDT Apr 15, 2026-6pm CDT Apr 21, 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