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.

Fog

41°F

5°C

Humidity 100%
Wind Speed N 3 mph
Barometer 30.00 in
Dewpoint 41°F (5°C)
Visibility 0.25 mi
Last update 4 Mar 9:35 pm CST
Extended Forecast for

5 Miles WNW Argyle IA

Dense Fog Advisory until March 5, 06:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 5, 06:00am

    NOW until 6:00am Thu

    Dense Fog Advisory

  • Tonight

    Low: 41 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: A 30 percent chance of showers before 8am. Areas of fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 62. Calm wind becoming west around 5 mph.

    High: 62 °F

    Chance
    Showers and
    Areas Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm after midnight. Increasing clouds, with a low around 47. Light southeast wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Mostly Cloudy
    then Rain
    Likely

  • Friday

    Friday: Rain and possibly a thunderstorm before noon, then a chance of rain between noon and 3pm, then a chance of rain and thunderstorms after 3pm. High near 76. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 76 °F

    Rain then
    Chance
    T-storms

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 43. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Saturday Night

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

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 5am, then a chance of showers after 5am. Patchy fog. Otherwise, cloudy, with a low around 41. Calm wind. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers before 8am. Areas of fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 62. Calm wind becoming west around 5 mph.
Thursday Night
Rain likely and possibly a thunderstorm after midnight. Increasing clouds, with a low around 47. Light southeast wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Friday
Rain and possibly a thunderstorm before noon, then a chance of rain between noon and 3pm, then a chance of rain and thunderstorms after 3pm. High near 76. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday Night
Rain and possibly a thunderstorm. Low around 43. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Partly sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 73.
Monday Night
A 40 percent chance of rain and thunderstorms. Partly cloudy, with a low around 56.
Tuesday
Rain likely. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 48. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Argyle IA
 40.55°N 91.65°W (Elev. 584 ft)
Last Update:
8:46 pm CST Mar 4, 2026
Forecast Valid:
9pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation