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

8°F

-13°C

Humidity 45%
Wind Speed N 18 G 29 mph
Barometer 30.61 in (1037.2 mb)
Dewpoint -9°F (-23°C)
Visibility 10.00 mi
Wind Chill-11°F (-24°C)
Last update 23 Jan 6:54 am CST
Extended Forecast for

Rockbridge IL

Cold Weather Advisory until January 24, 12:00pm
Winter Storm Warning January 24, 09:00am until January 25, 06:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning
  •  
    Cold Weather Advisory until January 24, 12:00pm

    NOW until 12:00pm Sat

    Cold Weather Advisory

  • Today

    High: 5 °F

    Cold

  • Tonight

    Tonight: Increasing clouds, with a low around 1. Wind chill values as low as -15. North wind around 11 mph.

    Low: 1 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Snow, mainly after noon. High near 10. Wind chill values as low as -15. Northeast wind around 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 10 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: Snow. Low around 7. Northeast wind 8 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 7 °F

    Snow

  • Sunday

    Sunday: Snow likely, mainly before noon. Cloudy and cold, with a high near 14. North wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 14 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around -4.

    Low: -4 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 15.

    High: 15 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny and cold, with a steady temperature around 5. Wind chill values as low as -15. North wind 13 to 17 mph, with gusts as high as 26 mph.
Tonight
Increasing clouds, with a low around 1. Wind chill values as low as -15. North wind around 11 mph.
Saturday
Snow, mainly after noon. High near 10. Wind chill values as low as -15. Northeast wind around 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Snow. Low around 7. Northeast wind 8 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow likely, mainly before noon. Cloudy and cold, with a high near 14. North wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
A 20 percent chance of snow before midnight. Partly cloudy, with a low around -4.
Monday
Sunny and cold, with a high near 15.
Monday Night
Mostly clear, with a low around 3.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 4.
Wednesday
Partly sunny, with a high near 21.
Wednesday Night
Partly cloudy, with a low around -1.
Thursday
Mostly sunny and cold, with a high near 15.
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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:
3:16 am CST Jan 23, 2026
Forecast Valid:
7am CST Jan 23, 2026-6pm CST Jan 29, 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