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

12°F

-11°C

Humidity 64%
Wind Speed W 9 mph
Barometer 30.23 in (1024.4 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 18 Jan 2:54 am CST
Extended Forecast for

Rockbridge IL

Cold Weather Advisory January 19, 03:00am until January 19, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 11. West wind around 9 mph.

    Low: 11 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of flurries after 5pm. Increasing clouds, with a high near 29. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 29 °F

    Chance
    Flurries

  • Sunday Night

    Sunday Night: A chance of flurries before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 6. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 34 mph.

    Low: 6 °F

    Chance
    Flurries and
    Blustery

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 8 to 18 mph, with gusts as high as 30 mph.

    High: 18 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8. West wind 3 to 6 mph.

    Low: 8 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 11. West wind around 9 mph.
Sunday
A chance of flurries after 5pm. Increasing clouds, with a high near 29. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Sunday Night
A chance of flurries before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 6. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 34 mph.
M.L.King Day
Sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 8 to 18 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 8. West wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 23.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 40.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 25.
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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 18, 2026
Forecast Valid:
3am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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