National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

46°F

8°C

Humidity 66%
Wind Speed S 12 mph
Barometer 29.89 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 17 Feb 1:35 am CST
Extended Forecast for

Hamilton ILSimilar City Names

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 47. South wind around 5 mph.

    Low: 47 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 64 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 40 mph.

    Low: 51 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 67. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 50 percent chance of rain after noon. Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before midnight. Partly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain
    then Partly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 47. South wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 64. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 40 mph.
Wednesday
Sunny, with a high near 67. West wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly cloudy, with a low around 43.
Thursday
A 50 percent chance of rain after noon. Partly sunny, with a high near 66.
Thursday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Sunny, with a high near 39.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Mostly sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hamilton ILSimilar City Names
 40.39°N 91.36°W (Elev. 512 ft)
Last Update:
1:16 am CST Feb 17, 2026
Forecast Valid:
1am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
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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