Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

68°F

20°C

Humidity 76%
Wind Speed SW 6 mph
Barometer 29.94 in (1013.4 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Apr 3:54 am CDT
Extended Forecast for

3 Miles SSW Dow IL

  • Today

    Today: Mostly sunny, with a high near 85. South wind 10 to 18 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 68. South wind 13 to 17 mph, with gusts as high as 30 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers before 10am, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 87. Southwest wind 11 to 17 mph, with gusts as high as 26 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. South wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm.  High near 79. Southwest wind 10 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 80%.

    High: 79 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm.  Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 7am.  Mostly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 85. South wind 10 to 18 mph.
Tonight
Partly cloudy, with a low around 68. South wind 13 to 17 mph, with gusts as high as 30 mph.
Tuesday
A slight chance of showers before 10am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Southwest wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 13 to 15 mph, with gusts as high as 24 mph.
Wednesday
Showers and possibly a thunderstorm. High near 79. Southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Thursday
A chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 42.
Sunday
Sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
1:26 am CDT Apr 13, 2026
4am CDT Apr 13, 2026-6pm CDT Apr 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

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