Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
65°F
18°C
| Humidity | 32% |
| Wind Speed | S 8 mph |
| Barometer | 30.36 in (1028.0 mb) |
| Dewpoint | 34°F (1°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 4:54 pm CDT |
Extended Forecast for
Jerseyville IL
Tonight
Low: 39 °F
Clear
Monday
High: 70 °F
Sunny
Monday Night
Low: 41 °F
Partly Cloudy
Tuesday
High: 74 °F
Mostly Sunny
Tuesday Night
Low: 44 °F
Mostly Clear
Wednesday
High: 76 °F
Sunny
Wednesday Night
Low: 46 °F
Clear
Thursday
High: 77 °F
Sunny
Thursday Night
Low: 48 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 39. Southeast wind 5 to 7 mph becoming calm after midnight.
Monday
Sunny, with a high near 70. Calm wind becoming south around 5 mph.
Monday Night
Partly cloudy, with a low around 41. Light east wind.
Tuesday
Mostly sunny, with a high near 74. Calm wind.
Tuesday Night
Mostly clear, with a low around 44. Calm wind.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Clear, with a low around 46.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 48.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 79.
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)
2:56 pm CDT Oct 18, 2026
5pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
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