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.

Fog/Mist

48°F

9°C

Humidity 89%
Wind Speed SE 3 mph
Barometer 30.18 in (1022.0 mb)
Dewpoint 45°F (7°C)
Visibility 6.00 mi
Last update 19 Nov 12:54 pm CST
Extended Forecast for

Rockbridge IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 51. Calm wind.

    High: 51 °F

    Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.

    Low: 46 °F

    Cloudy

  • Thursday

    Thursday: A slight chance of showers before 4pm, then a chance of showers after 5pm. Cloudy, with a high near 59. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 59 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely before midnight, then rain likely and possibly a thunderstorm between midnight and 1am, then rain likely after 1am. Cloudy, with a low around 49. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 49 °F

    Showers
    Likely

  • Friday

    Friday: Rain. High near 59. East wind 5 to 9 mph. Chance of precipitation is 80%.

    High: 59 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

This Afternoon
Cloudy, with a high near 51. Calm wind.
Tonight
Cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.
Thursday
A slight chance of showers before 4pm, then a chance of showers after 5pm. Cloudy, with a high near 59. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Thursday Night
Showers likely before midnight, then rain likely and possibly a thunderstorm between midnight and 1am, then rain likely after 1am. Cloudy, with a low around 49. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%.
Friday
Rain. High near 59. East wind 5 to 9 mph. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 39.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 59.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 41.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 55.
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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:
11:06 am CST Nov 19, 2025
Forecast Valid:
1pm CST Nov 19, 2025-6pm CST Nov 25, 2025
 
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