National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

73°F

23°C

Humidity 24%
Wind Speed W 17 mph
Barometer 29.68 in (1004.8 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 7 Nov 2:54 pm CST
Extended Forecast for

Rockbridge IL

  • Tonight

    Tonight: Mostly clear, with a low around 39. West wind 3 to 8 mph.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Rain likely, mainly after 5pm. Mostly cloudy, with a high near 61. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 70%.

    High: 61 °F

    Mostly Cloudy
    then Rain
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 32. Northwest wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Chance Rain
    then Slight
    Chance Rain

  • Sunday

    Sunday: A slight chance of rain before 9am, then a slight chance of rain and snow showers between 9am and noon, then a chance of flurries after noon. Mostly cloudy, then gradually becoming sunny, with a high near 38. Northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 38 °F

    Slight Chance
    Rain/Snow
    then Sunny

  • Sunday Night

    Sunday Night: A chance of flurries before midnight. Mostly clear, with a low around 22. Northwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Monday Night

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

    Low: 22 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 39. West wind 3 to 8 mph.
Saturday
Rain likely, mainly after 5pm. Mostly cloudy, with a high near 61. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 32. Northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Sunday
A slight chance of rain before 9am, then a slight chance of rain and snow showers between 9am and noon, then a chance of flurries after noon. Mostly cloudy, then gradually becoming sunny, with a high near 38. Northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Sunday Night
A chance of flurries before midnight. Mostly clear, with a low around 22. Northwest wind 9 to 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 41.
Monday Night
Mostly clear, with a low around 22.
Veterans Day
Partly sunny, with a high near 55.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 65.
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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 pm CST Nov 7, 2025
Forecast Valid:
3pm CST Nov 7, 2025-6pm CST Nov 14, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation