Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Mostly Cloudy
67°F
19°C
| Humidity | 93% |
| Wind Speed | NE 3 mph |
| Barometer | 30.00 in (1015.6 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 8.00 mi |
| Last update | 15 Oct 5:54 am CDT |
Extended Forecast for
Jerseyville IL
Today
High: 79 °F
Showers and
Patchy Fog
then Showers
LikelyTonight
Low: 44 °F
Showers
LikelyFriday
High: 56 °F
Breezy.
Mostly Sunny
then Isolated
ShowersFriday Night
Low: 36 °F
Gradual
ClearingSaturday
High: 60 °F
Sunny
Saturday Night
Low: 35 °F
Clear
Sunday
High: 67 °F
Sunny
Sunday Night
Low: 37 °F
Mostly Clear
Monday
High: 72 °F
Mostly Sunny
Detailed Forecast
Today
Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 9am and 11am. High near 79. East wind 5 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Tonight
Showers and thunderstorms likely before 1am, then isolated showers between 1am and 2am. Increasing clouds, with a low around 44. Northwest wind 13 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Friday
Isolated showers after 4pm. Increasing clouds, with a high near 56. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Friday Night
Cloudy during the early evening, then gradual clearing, with a low around 36. North wind 9 to 18 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 35.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 77.
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)
5:11 am CDT Oct 15, 2026
6am CDT Oct 15, 2026-6pm CDT Oct 21, 2026
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