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.

Mostly Cloudy

87°F

31°C

Humidity 51%
Wind Speed NA
Barometer 29.79 in (1008.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 17 Jun 3:54 pm CDT
Extended Forecast for

4 Miles WSW Rockbridge IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 88. Southwest wind around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. Southwest wind 6 to 8 mph becoming southeast in the evening. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 82. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 82 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 64. Southwest wind 5 to 10 mph becoming northwest in the evening.

    Low: 64 °F

    Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 83. Northwest wind around 6 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 88. Southwest wind around 5 mph.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. Southwest wind 6 to 8 mph becoming southeast in the evening. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 82. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 64. Southwest wind 5 to 10 mph becoming northwest in the evening.
Juneteenth
Sunny, with a high near 83. Northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Rockbridge IL
 39.26°N 90.26°W (Elev. 515 ft)
Last Update:
2:52 pm CDT Jun 17, 2025
Forecast Valid:
4pm CDT Jun 17, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

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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