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

57°F

14°C

Humidity 53%
Wind Speed Calm
Barometer 30.06 in (1017.7 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 14 May 12:54 am CDT
Extended Forecast for

5 Miles SE Silex MO

  • Overnight

    Overnight: Clear, with a low around 45. Calm wind.

    Low: 45 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 75. Calm wind becoming south around 6 mph in the afternoon.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 56. Southeast wind around 7 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. South wind 7 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. South wind around 6 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 45. Calm wind.
Thursday
Sunny, with a high near 75. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 56. Southeast wind around 7 mph, with gusts as high as 20 mph.
Friday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. South wind 7 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Friday Night
A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. South wind around 6 mph. Chance of precipitation is 40%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 70.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87.
Monday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 67. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Silex MO
 39.08°N 90.98°W (Elev. 673 ft)
Last Update:
1:25 am CDT May 14, 2026
Forecast Valid:
1am CDT May 14, 2026-6pm CDT May 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation