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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Rockbridge IL

  • This Afternoon

    This Afternoon: Showers likely, mainly before 3pm. Cloudy, with a steady temperature around 42. Breezy, with a northwest wind around 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.

    High: 42 °F

    Showers
    Likely and
    Breezy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 29 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Sunny, with a high near 53. Light west wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40. Breezy, with a south wind 13 to 20 mph, with gusts as high as 32 mph.

    Low: 40 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 57. West wind 13 to 17 mph, with gusts as high as 25 mph.

    High: 57 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 1am. Cloudy, with a low around 46.

    Low: 46 °F

    Cloudy then
    Slight Chance
    Rain

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 63. Breezy. Chance of precipitation is 80%.

    High: 63 °F

    Rain and
    Breezy

Detailed Forecast

This Afternoon
Showers likely, mainly before 3pm. Cloudy, with a steady temperature around 42. Breezy, with a northwest wind around 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 53. Light west wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 40. Breezy, with a south wind 13 to 20 mph, with gusts as high as 32 mph.
Friday
Partly sunny, with a high near 57. West wind 13 to 17 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Mostly cloudy, with a high near 57.
Saturday Night
A 20 percent chance of rain after 1am. Cloudy, with a low around 46.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 63. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 32. Breezy.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Partly sunny, with a high near 39.
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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:
1:26 pm CDT Mar 11, 2026
Forecast Valid:
2pm CDT Mar 11, 2026-6pm CDT Mar 17, 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