Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

58°F

14°C

Humidity 90%
Wind Speed Calm
Barometer 29.98 in (1014.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 11 Oct 10:54 pm CDT
Extended Forecast for

Jerseyville IL

  • Tonight

    Tonight: Mostly clear, with a low around 51. East wind around 7 mph.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Southeast wind 7 to 11 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. Southeast wind 6 to 8 mph.

    Low: 55 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 79. Southeast wind around 6 mph becoming north in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 51. East wind around 7 mph.
Sunday
Sunny, with a high near 79. Southeast wind 7 to 11 mph.
Sunday Night
Mostly clear, with a low around 55. Southeast wind 6 to 8 mph.
Columbus Day
Mostly sunny, with a high near 79. Southeast wind around 6 mph becoming north in the afternoon.
Monday Night
Mostly cloudy, with a low around 60. Calm wind.
Tuesday
Partly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 57.
Friday
Mostly sunny, with a high near 80.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 59.
Saturday
A 40 percent chance of showers. Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Jerseyville IL
 39.11°N 90.32°W (Elev. 630 ft)
10:11 pm CDT Oct 11, 2025
11pm CDT Oct 11, 2025-6pm CDT Oct 18, 2025
 
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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