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Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Overcast
28°F
-2°C
| Humidity | 66% |
| Wind Speed | N 8 mph |
| Barometer | 30.31 in (1026.7 mb) |
| Dewpoint | 18°F (-8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 20°F (-7°C) |
| Last update | 4 Feb 12:54 am CST |
Extended Forecast for
Jerseyville IL
Overnight
Low: 18 °F
Mostly Cloudy
Wednesday
High: 30 °F
Partly Sunny
Wednesday Night
Low: 15 °F
Mostly Clear
Thursday
High: 39 °F
Partly Sunny
Thursday Night
Low: 29 °F
Mostly Clear
Friday
High: 47 °F
Mostly Sunny
Friday Night
Low: 23 °F
Partly Cloudy
Saturday
High: 39 °F
Mostly Sunny
Saturday Night
Low: 28 °F
Partly Cloudy
Detailed Forecast
Overnight
Mostly cloudy, with a low around 18. North wind around 6 mph.
Wednesday
Partly sunny, with a high near 30. North wind around 7 mph.
Wednesday Night
Mostly clear, with a low around 15. North wind around 5 mph becoming calm.
Thursday
Partly sunny, with a high near 39. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 29. South wind 7 to 10 mph becoming west after midnight.
Friday
Mostly sunny, with a high near 47.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Mostly clear, with a low around 27.
Monday
Mostly sunny, with a high near 49.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 36.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 56.
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)
12:26 am CST Feb 4, 2026
1am CST Feb 4, 2026-6pm CST Feb 10, 2026
Additional Resources
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Hourly Weather Forecast
