Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

A Few Clouds

23°F

-5°C

Humidity 53%
Wind Speed NW 15 G 26 mph
Barometer 30.15 in (1021.4 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 16 Mar 10:54 pm CDT
Extended Forecast for

5 Miles WNW Rockbridge IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 11. Northwest wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 11 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Increasing clouds, with a high near 32. Northwest wind 7 to 9 mph becoming southwest in the afternoon.

    High: 32 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow likely, mainly between 10pm and 1am.  Cloudy, with a low around 27. Southeast wind 9 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Snow Likely
    then Chance
    Snow

  • Wednesday

    Wednesday: Sunny, with a high near 61. South wind around 10 mph becoming west in the afternoon.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39. West wind around 5 mph becoming calm.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 11. Northwest wind 11 to 15 mph, with gusts as high as 25 mph.
Tuesday
Increasing clouds, with a high near 32. Northwest wind 7 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Snow likely, mainly between 10pm and 1am. Cloudy, with a low around 27. Southeast wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Sunny, with a high near 61. South wind around 10 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 39. West wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Rockbridge IL
 39.29°N 90.29°W (Elev. 545 ft)
8:56 pm CDT Mar 16, 2026
11pm CDT Mar 16, 2026-6pm CDT Mar 23, 2026
 
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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