Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
71°F
22°C
| Humidity | 73% |
| Wind Speed | S 13 G 23 mph |
| Barometer | 29.69 in (1005.0 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 10 Mar 10:54 pm CDT |
Extended Forecast for
5 Miles WNW Grafton IL
Tonight
Low: 56 °F
T-storms
Wednesday
High: 66 °F⇓
T-storms then
Chance RainWednesday Night
Low: 32 °F
Decreasing
CloudsThursday
High: 54 °F
Sunny
Thursday Night
Low: 45 °F
Mostly Cloudy
then Mostly
Cloudy and
BreezyFriday
High: 59 °F
Partly Sunny
Friday Night
Low: 38 °F
Mostly Cloudy
Saturday
High: 67 °F
Partly Sunny
Saturday Night
Low: 49 °F
Mostly Cloudy
then Chance
Rain
Detailed Forecast
Tonight
Rain and thunderstorms, mainly before 4am, then rain and possibly a thunderstorm after 4am. Low around 56. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before 2pm, then a slight chance of rain between 2pm and 4pm. Temperature falling to around 47 by 4pm. Southwest wind 9 to 18 mph becoming northwest in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 54. West wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 45. Breezy, with a south wind 10 to 20 mph, with gusts as high as 31 mph.
Friday
Partly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 67.
Saturday Night
A 30 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 49.
Sunday
Rain and possibly a thunderstorm before 1pm, then rain likely. High near 63. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 30%.
Monday
Sunny, with a high near 35.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Partly sunny, with a high near 42.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
5 Miles WNW Grafton IL
39°N 90.5°W (Elev. 801 ft)
39°N 90.5°W (Elev. 801 ft)
10:30 pm CDT Mar 10, 2026
11pm CDT Mar 10, 2026-6pm CDT Mar 17, 2026
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