Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
A Few Clouds and Windy
79°F
26°C
| Humidity | 38% |
| Wind Speed | S 28 G 37 mph |
| Barometer | 29.96 in (1014.3 mb) |
| Dewpoint | 51°F (11°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 12 Apr 1:54 pm CDT |
Extended Forecast for
3 Miles SSW Dow IL
This Afternoon

High: 80 °F
Chance
Showers and
BreezyTonight

Low: 65 °F
Chance
T-storms and
BreezyMonday

High: 85 °F
Partly Sunny
Monday Night

Low: 67 °F
Slight Chance
T-stormsTuesday
High: 87 °F
Partly Sunny
then Chance
T-stormsTuesday Night

Low: 67 °F
Chance
T-stormsWednesday

High: 80 °F
Showers
Wednesday Night

Low: 62 °F
Showers
LikelyThursday

High: 83 °F
Slight Chance
Showers
Detailed Forecast
This Afternoon
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Breezy, with a south wind around 22 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 29 mph.
Monday
Partly sunny, with a high near 85. South wind 10 to 17 mph, with gusts as high as 26 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South wind 14 to 16 mph, with gusts as high as 24 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Southwest wind 13 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Wednesday
Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Thursday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Additional Forecasts and Information
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ABOUT 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)
2:01 pm CDT Apr 12, 2026
2pm CDT Apr 12, 2026-6pm CDT Apr 18, 2026



