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.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed SE 7 mph
Barometer 30.19 in (1022.5 mb)
Dewpoint 38°F (3°C)
Visibility 2.50 mi
Wind Chill34°F (1°C)
Last update 2 Mar 9:54 pm CST
Extended Forecast for

Rockbridge IL

  • Tonight

    Tonight: Patchy drizzle before 2am, then rain, mainly after 4am. Patchy fog. Low around 36. East wind around 6 mph. Chance of precipitation is 90%.

    Low: 36 °F

    Patchy
    Drizzle and
    Patchy Fog
    then Rain and
    Patchy Fog

  • Tuesday

    Tuesday: Rain and thunderstorms, mainly before 1pm, then rain and possibly a thunderstorm after 3pm. Patchy fog before 11am. High near 52. East wind around 6 mph. Chance of precipitation is 100%.

    High: 52 °F

    Rain and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm, mainly before 5am, then a chance of rain and thunderstorms after 5am. Patchy fog between 7pm and midnight. Low around 44. Northeast wind 7 to 9 mph. Chance of precipitation is 100%.

    Low: 44 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then rain between noon and 1pm, then rain and possibly a thunderstorm after 1pm. Patchy fog between 7am and 1pm. High near 60. East wind around 7 mph becoming south in the afternoon. Chance of precipitation is 90%.

    High: 60 °F

    Rain and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 51. South wind around 7 mph. Chance of precipitation is 80%.

    Low: 51 °F

    Rain

  • Thursday

    Thursday: Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and noon, then a chance of rain and thunderstorms after noon. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.

    High: 66 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A slight chance of rain, then a chance of rain and thunderstorms after midnight. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Low: 51 °F

    Slight Chance
    Rain then
    Chance Rain

  • Friday

    Friday: Rain likely and possibly a thunderstorm before noon, then a chance of rain. Partly sunny, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Chance
    T-storms then
    Rain

Detailed Forecast

Tonight
Patchy drizzle before 2am, then rain, mainly after 4am. Patchy fog. Low around 36. East wind around 6 mph. Chance of precipitation is 90%.
Tuesday
Rain and thunderstorms, mainly before 1pm, then rain and possibly a thunderstorm after 3pm. Patchy fog before 11am. High near 52. East wind around 6 mph. Chance of precipitation is 100%.
Tuesday Night
Rain and possibly a thunderstorm, mainly before 5am, then a chance of rain and thunderstorms after 5am. Patchy fog between 7pm and midnight. Low around 44. Northeast wind 7 to 9 mph. Chance of precipitation is 100%.
Wednesday
Rain and possibly a thunderstorm before noon, then rain between noon and 1pm, then rain and possibly a thunderstorm after 1pm. Patchy fog between 7am and 1pm. High near 60. East wind around 7 mph becoming south in the afternoon. Chance of precipitation is 90%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 51. South wind around 7 mph. Chance of precipitation is 80%.
Thursday
Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and noon, then a chance of rain and thunderstorms after noon. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Thursday Night
A slight chance of rain, then a chance of rain and thunderstorms after midnight. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Friday
Rain likely and possibly a thunderstorm before noon, then a chance of rain. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Friday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 56. Chance of precipitation is 80%.
Saturday
Rain likely, with thunderstorms also possible after noon. Cloudy, with a high near 67. Chance of precipitation is 70%.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 44.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 63.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 46.
Monday
A 30 percent chance of rain. Mostly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockbridge IL
 39.26°N 90.2°W (Elev. 509 ft)
Last Update:
10:30 pm CST Mar 2, 2026
Forecast Valid:
10pm CST Mar 2, 2026-6pm CDT Mar 9, 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