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.

Fair

71°F

22°C

Humidity 90%
Wind Speed SE 6 mph
Barometer 30.20 in (1021.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 6 Aug 3:51 am CDT
Extended Forecast for

Florissant MO

  • Today

    Today: Mostly sunny, with a high near 90. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. Southeast wind 3 to 6 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming south 5 to 7 mph in the morning.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. Southeast wind 5 to 7 mph.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 94. South wind 5 to 9 mph.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 90. Calm wind becoming southeast around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 74. Southeast wind 3 to 6 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming south 5 to 7 mph in the morning.
Thursday Night
Partly cloudy, with a low around 74. Southeast wind 5 to 7 mph.
Friday
Sunny, with a high near 94. South wind 5 to 9 mph.
Friday Night
Mostly clear, with a low around 77.
Saturday
Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.34°W (Elev. 499 ft)
Last Update:
3:11 am CDT Aug 6, 2025
Forecast Valid:
4am CDT Aug 6, 2025-6pm CDT Aug 12, 2025
 
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