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Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
37°F
3°C
| Humidity | 62% |
| Wind Speed | Calm |
| Barometer | 30.13 in (1020.5 mb) |
| Dewpoint | 25°F (-4°C) |
| Visibility | 10.00 mi |
| Last update | 12 Jan 7:54 pm CST |
Extended Forecast for
3 Miles WSW Hardin IL
Tonight

Low: 37 °F
Mostly Clear
Tuesday

High: 58 °F
Increasing
CloudsTuesday Night
Low: 35 °F
Chance Rain
then Mostly
CloudyWednesday

High: 39 °F⇓
Partly Sunny
Wednesday Night

Low: 17 °F
Mostly Clear
Thursday

High: 31 °F
Mostly Sunny
Thursday Night

Low: 25 °F
Mostly Cloudy
Friday
High: 40 °F
Mostly Cloudy
then Slight
Chance SnowFriday Night

Low: 18 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 37. Calm wind becoming south 5 to 7 mph in the evening.
Tuesday
Increasing clouds, with a high near 58. West wind 7 to 13 mph, with gusts as high as 26 mph.
Tuesday Night
A 30 percent chance of rain, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 35. West wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday
Partly sunny, with a temperature rising to near 39 by 11am, then falling to around 32 during the remainder of the day. Northwest wind 14 to 17 mph, with gusts as high as 34 mph.
Wednesday Night
Mostly clear, with a low around 17. North wind 7 to 14 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 40.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 12.
M.L.King Day
Mostly sunny, with a high near 33.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles WSW Hardin IL
39.14°N 90.66°W (Elev. 604 ft)
39.14°N 90.66°W (Elev. 604 ft)
8:26 pm CST Jan 12, 2026
8pm CST Jan 12, 2026-6pm CST Jan 19, 2026


