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

15°F

-9°C

Humidity 49%
Wind Speed NE 7 mph
Barometer 30.43 in (1031.0 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 30 Jan 11:54 am CST
Extended Forecast for

Rockbridge IL

  • Today

    Today: A chance of flurries after 1pm. Mostly sunny and cold, with a high near 17. North wind 7 to 11 mph.

    High: 17 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before midnight. Cloudy, then gradual clearing toward daybreak, with a low around 3. Wind chill values as low as -10. North wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 3 °F

    Chance
    Flurries

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny and cold, with a high near 20. Wind chill values as low as -10. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around -2. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: -2 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 27. Calm wind becoming south 5 to 8 mph in the morning.

    High: 27 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow after noon. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.

    High: 35 °F

    Cloudy then
    Chance
    Rain/Snow

Detailed Forecast

Today
A chance of flurries after 1pm. Mostly sunny and cold, with a high near 17. North wind 7 to 11 mph.
Tonight
A chance of flurries before midnight. Cloudy, then gradual clearing toward daybreak, with a low around 3. Wind chill values as low as -10. North wind 8 to 11 mph, with gusts as high as 22 mph.
Saturday
Partly sunny, then gradually becoming sunny and cold, with a high near 20. Wind chill values as low as -10. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around -2. Northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 27. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 33.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
A chance of rain and snow after noon. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Wednesday
A 20 percent chance of snow. Cloudy, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Partly sunny, with a high near 33.
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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:
11:01 am CST Jan 30, 2026
Forecast Valid:
11am CST Jan 30, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation