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Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
75°F
24°C
| Humidity | 84% |
| Wind Speed | N 7 mph |
| Barometer | 30.03 in (1016.3 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 11 Jul 8:54 pm CDT |
Extended Forecast for
Jerseyville IL
Tonight
Low: 65 °F
Mostly Clear
Sunday
High: 85 °F
Sunny
Sunday Night
Low: 64 °F
Clear
Monday
High: 86 °F
Sunny
Monday Night
Low: 66 °F
Clear
Tuesday
High: 89 °F
Sunny
Tuesday Night
Low: 69 °F
Mostly Clear
Wednesday
High: 90 °F
Sunny
Wednesday Night
Low: 70 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 65. North wind around 6 mph.
Sunday
Sunny, with a high near 85. Northeast wind 7 to 11 mph.
Sunday Night
Clear, with a low around 64. Northeast wind 3 to 8 mph.
Monday
Sunny, with a high near 86. Northeast wind 5 to 9 mph.
Monday Night
Clear, with a low around 66. Northeast wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 93.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Jerseyville IL
39.13°N 90.32°W (Elev. 614 ft)
39.13°N 90.32°W (Elev. 614 ft)
7:36 pm CDT Jul 11, 2026
9pm CDT Jul 11, 2026-6pm CDT Jul 18, 2026
Additional Resources
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Hourly Weather Forecast
