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

36°F

2°C

Humidity 67%
Wind Speed W 8 mph
Barometer 29.74 in (1007.5 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 16 Jan 8:54 am CST
Extended Forecast for

Rockbridge IL

  • Today

    Today: A slight chance of rain between 4pm and 5pm, then a chance of snow. Cloudy, then gradually becoming mostly sunny, with a high near 43. West wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 43 °F

    Cloudy then
    Chance
    Rain/Snow

  • Tonight

    Tonight: A 50 percent chance of snow, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 19. West wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 19 °F

    Chance Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 24. West wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 24 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 9. West wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 9 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 30. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 7.

    Low: 7 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of rain between 4pm and 5pm, then a chance of snow. Cloudy, then gradually becoming mostly sunny, with a high near 43. West wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Tonight
A 50 percent chance of snow, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 19. West wind 10 to 13 mph, with gusts as high as 24 mph.
Saturday
Partly sunny, with a high near 24. West wind 11 to 17 mph, with gusts as high as 26 mph.
Saturday Night
Mostly clear, with a low around 9. West wind 7 to 11 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 30. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 9.
M.L.King Day
Sunny and cold, with a high near 20.
Monday Night
Mostly clear, with a low around 7.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 46.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 37.
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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:
8:06 am CST Jan 16, 2026
Forecast Valid:
9am CST Jan 16, 2026-6pm CST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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