National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

25°C

77°F

Humidity 42%
Wind Speed SE 26 G 37 km/h
Barometer 1019.9 mb (30.15 in)
Dewpoint 11°C (52°F)
Visibility 16 km
Heat Index26°C (78°F)
Last update 31 May 10:51 am CDT
Extended Forecast for

Saint Charles MO

  • Today

    Today: Mostly cloudy, with a high near 27. Southeast wind around 18 km/h, with gusts as high as 32 km/h.

    High: 27 °C

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 18. East wind 11 to 16 km/h, with gusts as high as 32 km/h. Chance of precipitation is 90%.

    Low: 18 °C

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms, mainly between noon and 4pm. High near 24. East wind 11 to 14 km/h becoming southwest in the afternoon. Chance of precipitation is 80%.

    High: 24 °C

    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 17. Northwest wind 5 to 10 km/h becoming calm after midnight.

    Low: 17 °C

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 29. Calm wind becoming southeast 5 to 10 km/h in the afternoon.

    High: 29 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 19.

    Low: 19 °C

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 29. Chance of precipitation is 70%.

    High: 29 °C

    Showers
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 30.

    High: 30 °C

    Chance
    T-storms

Detailed Forecast

Today
Mostly cloudy, with a high near 27. Southeast wind around 18 km/h, with gusts as high as 32 km/h.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 18. East wind 11 to 16 km/h, with gusts as high as 32 km/h. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms, mainly between noon and 4pm. High near 24. East wind 11 to 14 km/h becoming southwest in the afternoon. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 17. Northwest wind 5 to 10 km/h becoming calm after midnight.
Sunday
Mostly sunny, with a high near 29. Calm wind becoming southeast 5 to 10 km/h in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 19.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 29. Chance of precipitation is 70%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 30.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 18.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 28.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MO
 38.78°N 90.51°W (Elev. 597 m)
Last Update:
10:07 am CDT May 31, 2024
Forecast Valid:
11am CDT May 31, 2024-6pm CDT Jun 6, 2024
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation