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.

Fair

59°F

15°C

Humidity 81%
Wind Speed E 7 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 11 Apr 9:54 pm CDT
Extended Forecast for

4 Miles NNE Saint Charles MO

  • Tonight

    Tonight: Partly cloudy, with a low around 62. South wind around 9 mph.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Partly sunny, with a high near 82. South wind 8 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, then showers likely and possibly a thunderstorm after 7pm. Mostly cloudy, with a low around 65. Southwest wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. South wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 69. South wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 69 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 62. South wind around 9 mph.
Sunday
A slight chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Partly sunny, with a high near 82. South wind 8 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers, then showers likely and possibly a thunderstorm after 7pm. Mostly cloudy, with a low around 65. Southwest wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. South wind 10 to 16 mph, with gusts as high as 26 mph.
Monday Night
Mostly cloudy, with a low around 69. South wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Thursday Night
A 20 percent chance of showers. Mostly clear, with a low around 62.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Saint Charles MO
 38.85°N 90.51°W (Elev. 436 ft)
Last Update:
9:26 pm CDT Apr 11, 2026
Forecast Valid:
10pm CDT Apr 11, 2026-6pm CDT Apr 18, 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