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

17°F

-8°C

Humidity 56%
Wind Speed W 15 mph
Barometer 30.53 in (1034.5 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 31 Jan 12:54 pm CST
Extended Forecast for

Rockbridge IL

  • This Afternoon

    This Afternoon: Mostly sunny and cold, with a high near 20. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 20 °F

    Cold

  • Tonight

    Tonight: Mostly clear, with a low around 0. Northwest wind around 6 mph becoming light and variable in the evening.

    Low: 0 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Increasing clouds, with a high near 26. Light south wind increasing to 5 to 10 mph in the morning.

    High: 26 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16. South wind around 6 mph becoming light and variable after midnight.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 35. West wind 3 to 6 mph.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 31.

    High: 31 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny and cold, with a high near 20. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 0. Northwest wind around 6 mph becoming light and variable in the evening.
Sunday
A 20 percent chance of snow after noon. Increasing clouds, with a high near 26. Light south wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 16. South wind around 6 mph becoming light and variable after midnight.
Monday
Mostly sunny, with a high near 35. West wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Partly sunny, with a high near 27.
Wednesday Night
Partly cloudy, with a low around 6.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 22.
Friday
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:
11:11 am CST Jan 31, 2026
Forecast Valid:
1pm CST Jan 31, 2026-6pm CST Feb 6, 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