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

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast with Haze

32°F

0°C

Humidity 82%
Wind Speed N 15 mph
Barometer 30.25 in (1024.9 mb)
Dewpoint 27°F (-3°C)
Visibility 6.00 mi
Wind Chill22°F (-6°C)
Last update 3 Dec 10:54 pm CST
Extended Forecast for

Jerseyville IL

  • Tonight

    Tonight: A slight chance of snow before 1am, then a chance of flurries between 1am and 3am. Cloudy, with a low around 10. North wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 10 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny and cold, with a high near 20. North wind 3 to 8 mph.

    High: 20 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 9. Light and variable wind becoming south 5 to 7 mph in the evening.

    Low: 9 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 35. South wind 5 to 7 mph.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. South wind around 5 mph becoming west after midnight.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 23. Chance of precipitation is 20%.

    Low: 23 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Sunday

    Sunday: A 20 percent chance of snow. Mostly cloudy, with a high near 29.

    High: 29 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of snow before 1am, then a chance of flurries between 1am and 3am. Cloudy, with a low around 10. North wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny and cold, with a high near 20. North wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 9. Light and variable wind becoming south 5 to 7 mph in the evening.
Friday
Sunny, with a high near 35. South wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 22. South wind around 5 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 35.
Saturday Night
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 23. Chance of precipitation is 20%.
Sunday
A 20 percent chance of snow. Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 13.
Monday
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jerseyville IL
 39.11°N 90.32°W (Elev. 630 ft)
Last Update:
10:11 pm CST Dec 3, 2025
Forecast Valid:
11pm CST Dec 3, 2025-6pm CST Dec 10, 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