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

70°F

21°C

Humidity 43%
Wind Speed S 13 mph
Barometer 29.95 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 4 Nov 1:55 pm CST
Extended Forecast for

Pontoosuc IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 69. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 49. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 59. Breezy, with a north wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 59 °F

    Sunny and
    Breezy then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34. Northwest wind around 5 mph becoming calm.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

    Low: 54 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after noon. Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 69. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 49. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 59. Breezy, with a north wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 34. Northwest wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 42.
Saturday
A 30 percent chance of showers after noon. Partly sunny, with a high near 58.
Saturday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 25.
Monday
Sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pontoosuc IL
 40.63°N 91.21°W (Elev. 531 ft)
Last Update:
1:46 pm CST Nov 4, 2025
Forecast Valid:
2pm CST Nov 4, 2025-6pm CST Nov 10, 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