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

26°F

-3°C

Humidity 44%
Wind Speed NW 15 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 16 Jan 11:54 pm CST
Extended Forecast for

Rockbridge IL

  • Overnight

    Overnight: A 20 percent chance of snow before 3am. Partly cloudy, with a low around 18. West wind 13 to 15 mph, with gusts as high as 28 mph.

    Low: 18 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 23. West wind 13 to 18 mph, with gusts as high as 25 mph.

    High: 23 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9. West wind 6 to 14 mph.

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 31. Southwest wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 31 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 9. West wind 9 to 16 mph becoming northwest after midnight. Winds could gust as high as 26 mph.

    Low: 9 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow before 3am. Partly cloudy, with a low around 18. West wind 13 to 15 mph, with gusts as high as 28 mph.
Saturday
Partly sunny, with a high near 23. West wind 13 to 18 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 9. West wind 6 to 14 mph.
Sunday
Partly sunny, with a high near 31. Southwest wind 6 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 9. West wind 9 to 16 mph becoming northwest after midnight. Winds could gust as high as 26 mph.
M.L.King Day
Sunny and cold, with a high near 20.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 34. Chance of precipitation is 20%.
Thursday Night
A chance of snow and freezing rain. Partly cloudy, with a low around 20. Chance of precipitation is 30%.
Friday
A slight chance of rain and snow. Mostly sunny, with a high near 37. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rockbridge IL
 39.26°N 90.2°W (Elev. 509 ft)
Last Update:
9:56 pm CST Jan 16, 2026
Forecast Valid:
12am CST Jan 17, 2026-6pm CST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation