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

61°F

16°C

Humidity 50%
Wind Speed SE 9 mph
Barometer 29.89 in (1011.8 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 15 May 2:54 am CDT
Extended Forecast for

4 Miles ENE Cave MO

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 57. Southeast wind around 8 mph. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 85. South wind 7 to 9 mph, with gusts as high as 21 mph.

    High: 85 °F

    Chance
    T-storms then
    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers between 3am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 65. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 83. South wind around 6 mph. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. South wind around 6 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 57. Southeast wind around 8 mph. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 85. South wind 7 to 9 mph, with gusts as high as 21 mph.
Friday Night
A slight chance of showers between 3am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 65. South wind around 7 mph. Chance of precipitation is 20%.
Saturday
Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 83. South wind around 6 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 63. South wind around 6 mph.
Sunday
Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 69.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 73.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Cave MO
 39.04°N 90.98°W (Elev. 636 ft)
Last Update:
1:26 am CDT May 15, 2026
Forecast Valid:
3am CDT May 15, 2026-6pm CDT May 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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