Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
63°F
17°C
| Humidity | 52% |
| Wind Speed | N 12 mph |
| Barometer | 30.23 in (1023.1 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 4 Oct 11:54 pm CDT |
Extended Forecast for
Jerseyville IL
Overnight
Low: 48 °F
Clear
Monday
High: 76 °F
Sunny
Monday Night
Low: 49 °F
Clear
Tuesday
High: 79 °F
Sunny
Tuesday Night
Low: 54 °F
Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 55 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 55 °F
Mostly Clear
Detailed Forecast
Overnight
Clear, with a low around 48. North wind around 5 mph.
Monday
Sunny, with a high near 76. Northeast wind 3 to 6 mph.
Monday Night
Clear, with a low around 49. Light and variable wind.
Tuesday
Sunny, with a high near 79. South wind 3 to 8 mph.
Tuesday Night
Clear, with a low around 54. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 84.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Jerseyville IL
39.11°N 90.32°W (Elev. 630 ft)
39.11°N 90.32°W (Elev. 630 ft)
10:21 pm CDT Oct 4, 2026
12am CDT Oct 5, 2026-6pm CDT Oct 11, 2026
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