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.

Fair

77°F

25°C

Humidity 74%
Wind Speed N 3 mph
Barometer 30.03 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Jul 8:15 pm CDT
Extended Forecast for

2 Miles NNW Donnellson IA

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 86. Calm wind becoming north around 5 mph.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming south around 5 mph in the morning.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 89. Chance of precipitation is 60%.

    High: 89 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 86. Calm wind becoming north around 5 mph.
Tuesday Night
Mostly clear, with a low around 64. Calm wind.
Wednesday
Sunny, with a high near 89. Calm wind becoming south around 5 mph in the morning.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Saturday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Donnellson IA
 40.66°N 91.59°W (Elev. 699 ft)
Last Update:
6:41 pm CDT Jul 6, 2026
Forecast Valid:
8pm CDT Jul 6, 2026-6pm CDT Jul 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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