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.

Light Rain

70°F

21°C

Humidity 69%
Wind Speed S 10 mph
Barometer 29.68 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Oct 12:55 am CDT
Extended Forecast for

Hamilton IL

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 64. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 80. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then showers likely after 1am. Mostly cloudy, with a low around 49. South wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Showers
    Likely

  • Sunday

    Sunday: Sunny, with a high near 62. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 64. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 80. Southwest wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then showers likely after 1am. Mostly cloudy, with a low around 49. South wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Sunny, with a high near 62. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Clear, with a low around 46.
Monday
Sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hamilton IL
 40.39°N 91.39°W (Elev. 574 ft)
Last Update:
10:51 pm CDT Oct 17, 2025
Forecast Valid:
1am CDT Oct 18, 2025-6pm CDT Oct 24, 2025
 
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