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

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

A Few Clouds and Breezy

38°F

3°C

Humidity 70%
Wind Speed NW 23 G 35 mph
Barometer 29.83 in (1010.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 14 Jan 6:54 am CST
Extended Forecast for

Hardin IL

  • Today

    Today: Scattered flurries between 8am and 10am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 29 by 5pm. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 36 mph.

    High: 37 °F⇓

    Scattered
    Flurries and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 18. Northwest wind 7 to 14 mph, with gusts as high as 26 mph.

    Low: 18 °F

    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 33. Northwest wind around 6 mph becoming south in the afternoon.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a temperature rising to around 34 by 3am. South wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 28 °F⇑

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 42. West wind 11 to 15 mph, with gusts as high as 30 mph.

    High: 42 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

Detailed Forecast

Today
Scattered flurries between 8am and 10am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 29 by 5pm. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 36 mph.
Tonight
Clear, with a low around 18. Northwest wind 7 to 14 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 33. Northwest wind around 6 mph becoming south in the afternoon.
Thursday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a temperature rising to around 34 by 3am. South wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 22 mph.
Friday
Partly sunny, with a high near 42. West wind 11 to 15 mph, with gusts as high as 30 mph.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 24.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 14.
M.L.King Day
Mostly sunny, with a high near 28.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hardin IL
 39.16°N 90.64°W (Elev. 692 ft)
Last Update:
4:21 am CST Jan 14, 2026
Forecast Valid:
7am CST Jan 14, 2026-6pm CST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation