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

79°F

26°C

Humidity 84%
Wind Speed SE 5 mph
Barometer 30.12 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 6 Aug 8:15 pm CDT
Extended Forecast for

Hamilton IL

  • Tonight

    Tonight: Mostly clear, with a low around 71. Southeast wind around 5 mph.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 10am and 11am. Mostly sunny, with a high near 91. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. South wind around 5 mph.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 93. Heat index values as high as 101. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 71. Southeast wind around 5 mph.
Thursday
A slight chance of showers and thunderstorms between 10am and 11am. Mostly sunny, with a high near 91. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 74. South wind around 5 mph.
Friday
Sunny, with a high near 93. Heat index values as high as 101. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 75.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hamilton IL
 40.39°N 91.36°W (Elev. 512 ft)
Last Update:
7:17 pm CDT Aug 6, 2025
Forecast Valid:
8pm CDT Aug 6, 2025-6pm CDT Aug 13, 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