National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

62°F

17°C

Humidity 30%
Wind Speed W 13 mph
Barometer 29.76 in (1007.8 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 13 Jan 1:54 pm CST
Extended Forecast for

5 Miles WNW Fidelity IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 59. West wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 59 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of rain before 9pm. Mostly cloudy, with a low around 34. West wind 9 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.

    Low: 34 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles and flurries before 7am, then a chance of flurries between 7am and 9am. Mostly cloudy through mid morning, then gradual clearing, with a temperature falling to around 29 by 5pm. Breezy, with a north wind 16 to 22 mph, with gusts as high as 31 mph.

    High: 36 °F⇓

    Breezy.
    Chance
    Sprinkles/Flurries
    then Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 16. Northwest wind 9 to 15 mph, with gusts as high as 24 mph.

    Low: 16 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 31. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 31 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 42. Breezy.

    High: 42 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 23.

    High: 23 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 59. West wind 10 to 15 mph, with gusts as high as 26 mph.
Tonight
A 20 percent chance of rain before 9pm. Mostly cloudy, with a low around 34. West wind 9 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.
Wednesday
A chance of sprinkles and flurries before 7am, then a chance of flurries between 7am and 9am. Mostly cloudy through mid morning, then gradual clearing, with a temperature falling to around 29 by 5pm. Breezy, with a north wind 16 to 22 mph, with gusts as high as 31 mph.
Wednesday Night
Clear, with a low around 16. Northwest wind 9 to 15 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 31. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 42. Breezy.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 23.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 14.
M.L.King Day
Mostly sunny, with a high near 30.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Fidelity IL
 39.17°N 90.24°W (Elev. 502 ft)
Last Update:
2:26 pm CST Jan 13, 2026
Forecast Valid:
2pm CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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