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.

Overcast

27°F

-3°C

Humidity 69%
Wind Speed E 3 mph
Barometer 30.20 in (1023.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 1 Feb 8:54 pm CST
Extended Forecast for

Rockbridge IL

  • Tonight

    Tonight: A slight chance of snow before 10pm, then a chance of flurries between 10pm and 11pm. Cloudy, with a low around 20. South wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 20%.

    Low: 20 °F

    Slight Chance
    Snow then
    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 33. Light and variable wind becoming northwest around 6 mph.

    High: 33 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Cloudy, with a low around 25. Calm wind becoming east around 5 mph after midnight.

    Low: 25 °F

    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 31. North wind 6 to 8 mph.

    High: 31 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13. North wind around 5 mph becoming calm in the evening.

    Low: 13 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of snow before 10pm, then a chance of flurries between 10pm and 11pm. Cloudy, with a low around 20. South wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Monday
Mostly cloudy, with a high near 33. Light and variable wind becoming northwest around 6 mph.
Monday Night
Cloudy, with a low around 25. Calm wind becoming east around 5 mph after midnight.
Tuesday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 31. North wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 13. North wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 28.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 43.
Friday Night
Partly cloudy, with a low around 18.
Saturday
Sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 40.
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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:
8:51 pm CST Feb 1, 2026
Forecast Valid:
9pm CST Feb 1, 2026-6pm CST Feb 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation