Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
43°F
6°C
| Humidity | 80% |
| Wind Speed | N 9 mph |
| Barometer | 30.55 in (1034.6 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 17 Oct 7:54 am CDT |
Extended Forecast for
4 Miles ESE Jerseyville IL
Frost Advisory October 17, 08:01am until October 17, 09:00am
NOW until 9:00am Sat
Frost Advisory
Today
High: 61 °F
Sunny
Tonight
Low: 35 °F
Clear then
Areas FrostSunday
High: 66 °F
Areas Frost
then SunnySunday Night
Low: 36 °F
Clear
Monday
High: 71 °F
Sunny
Monday Night
Low: 40 °F
Partly Cloudy
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 42 °F
Mostly Clear
Detailed Forecast
Today
Sunny, with a high near 61. North wind around 5 mph becoming calm in the morning.
Tonight
Areas of frost after 5am. Otherwise, clear, with a low around 35. Calm wind becoming southeast around 5 mph after midnight.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 66. South wind 5 to 8 mph.
Sunday Night
Clear, with a low around 36. Light southeast wind.
Monday
Sunny, with a high near 71. Light south wind.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles ESE Jerseyville IL
39.11°N 90.24°W (Elev. 600 ft)
39.11°N 90.24°W (Elev. 600 ft)
6:26 am CDT Oct 17, 2026
8am CDT Oct 17, 2026-6pm CDT Oct 23, 2026
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