Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fog/Mist
48°F
9°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 29.98 in (1015.1 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 3.00 mi |
| Last update | 5 Mar 7:54 am CST |
Extended Forecast for
3 Miles SW Hardin IL
Today
High: 65 °F
Slight Chance
Showers and
Patchy Fog
then Mostly
CloudyTonight
Low: 54 °F
Mostly Cloudy
then Chance
T-stormsFriday
High: 79 °F
Slight Chance
T-storms then
Slight Chance
ShowersFriday Night
Low: 55 °F
Chance
T-storms then
ShowersSaturday
High: 64 °F
Chance
Showers then
Partly SunnySaturday Night

Low: 38 °F
Partly Cloudy
Sunday

High: 65 °F
Sunny
Sunday Night

Low: 47 °F
Mostly Clear
Monday

High: 76 °F
Sunny
Detailed Forecast
Today
A 20 percent chance of showers before 9am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 65. Calm wind becoming west around 6 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 54. Calm wind becoming south 5 to 8 mph in the evening.
Friday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers after noon. Partly sunny, with a high near 79. South wind 9 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 55. South wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before noon. Partly sunny, with a high near 64. Southwest wind 8 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 76.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after midnight. Mostly clear, with a low around 58.
Tuesday
Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.
Wednesday
Showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles SW Hardin IL
39.12°N 90.67°W (Elev. 525 ft)
39.12°N 90.67°W (Elev. 525 ft)
8:41 am CST Mar 5, 2026
8am CST Mar 5, 2026-6pm CDT Mar 11, 2026



