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.

Fair

39°F

4°C

Humidity 93%
Wind Speed E 8 mph
Barometer 29.96 in (1014.4 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 17 Feb 1:54 am CST
Extended Forecast for

Kampsville IL

  • Overnight

    Overnight: Partly cloudy, with a low around 42. South wind around 6 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62. South wind 5 to 15 mph, with gusts as high as 31 mph.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of rain between 10pm and 3am. Cloudy during the early evening, then gradual clearing, with a low around 52. South wind 11 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Sunny, with a high near 70. West wind 5 to 10 mph, with gusts as high as 23 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. South wind 3 to 6 mph.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 71. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 34.

    Low: 34 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 42. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 62. South wind 5 to 15 mph, with gusts as high as 31 mph.
Tuesday Night
A slight chance of rain between 10pm and 3am. Cloudy during the early evening, then gradual clearing, with a low around 52. South wind 11 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 70. West wind 5 to 10 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 46. South wind 3 to 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 71. Chance of precipitation is 40%.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 34.
Friday
Sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 27.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly sunny, with a high near 43.
Saturday Night
A 20 percent chance of snow. Mostly clear, with a low around 24.
Sunday
Sunny, with a high near 38.
Sunday Night
Mostly clear, with a low around 17.
Monday
Sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kampsville IL
 39.29°N 90.6°W (Elev. 423 ft)
Last Update:
1:01 am CST Feb 17, 2026
Forecast Valid:
2am CST Feb 17, 2026-6pm CST Feb 23, 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