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.

Partly Cloudy

76°F

24°C

Humidity 91%
Wind Speed E 5 mph
Barometer 30.03 in (1015.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 15 Jul 4:51 am CDT
Extended Forecast for

3 Miles S Saint Charles MO

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

    High: 89 °F

    Patchy Fog
    then Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 73. Light south wind.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Southwest wind around 6 mph.

    Low: 74 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Northwest wind 5 to 8 mph.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87.

    High: 87 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 73. Light south wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Southwest wind around 6 mph.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Northwest wind 5 to 8 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 71.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Saint Charles MO
 38.74°N 90.51°W (Elev. 420 ft)
Last Update:
4:21 am CDT Jul 15, 2025
Forecast Valid:
5am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation