Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
77°F
25°C
| Humidity | 94% |
| Wind Speed | NE 3 mph |
| Barometer | 30.04 in (1016.6 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 8.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 18 Jul 10:54 pm CDT |
Extended Forecast for
3 Miles SSW Dow IL
Extreme Heat Watch July 21, 12:00pm until July 23, 07:00pm
Tonight
Low: 73 °F
Chance
T-stormsSaturday
High: 91 °F
Chance
T-stormsSaturday Night
Low: 75 °F
Chance
ShowersSunday
High: 93 °F
Slight Chance
T-stormsSunday Night
Low: 76 °F
Chance
T-stormsMonday
High: 93 °F
Chance
T-stormsMonday Night
Low: 76 °F
Slight Chance
T-stormsTuesday
High: 95 °F
Sunny
Tuesday Night
Low: 77 °F
Mostly Clear
Detailed Forecast
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 73. South wind around 5 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 100. South wind 6 to 8 mph becoming west in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 75. South wind around 6 mph. Chance of precipitation is 30%.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 102. Southwest wind around 7 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. South wind around 6 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 93.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 76.
Friday
Sunny, with a high near 95.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles SSW Dow IL
39°N 90.33°W (Elev. 597 ft)
39°N 90.33°W (Elev. 597 ft)
9:36 pm CDT Jul 18, 2025
11pm CDT Jul 18, 2025-6pm CDT Jul 25, 2025
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