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.

Light Rain

72°F

22°C

Humidity 52%
Wind Speed SW 16 G 28 mph
Barometer 29.61 in (1002.2 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 4 May 11:54 pm CDT
Extended Forecast for

Rockbridge IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm, mainly before 3am, then a chance of showers and thunderstorms after 3am. Low around 53. Southwest wind 6 to 9 mph becoming north. Winds could gust as high as 22 mph. Chance of precipitation is 80%.

    Low: 53 °F

    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 1pm, then showers likely between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 54. Northeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 54 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 3am. Low around 42. Northeast wind 6 to 10 mph. Chance of precipitation is 80%.

    Low: 42 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers. Partly sunny, with a high near 57. North wind 6 to 9 mph.

    High: 57 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 37. North wind 3 to 7 mph.

    Low: 37 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm, mainly before 3am, then a chance of showers and thunderstorms after 3am. Low around 53. Southwest wind 6 to 9 mph becoming north. Winds could gust as high as 22 mph. Chance of precipitation is 80%.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then showers likely between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 54. Northeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 3am. Low around 42. Northeast wind 6 to 10 mph. Chance of precipitation is 80%.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 57. North wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 37. North wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 43.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 70.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 75.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 71.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockbridge IL
 39.28°N 90.2°W (Elev. 531 ft)
Last Update:
10:31 pm CDT May 4, 2026
Forecast Valid:
12am CDT May 5, 2026-6pm CDT May 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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