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.

Overcast

73°F

23°C

Humidity 84%
Wind Speed NW 10 mph
Barometer 30.10 in (1017.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 31 Jul 7:51 am CDT
Extended Forecast for

Florissant MO

  • Today

    Today: A chance of showers and thunderstorms before 10am, then a slight chance of showers. Cloudy, with a high near 80. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Northeast wind 7 to 10 mph.

    Low: 62 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 81. Northeast wind 7 to 10 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Northeast wind 6 to 9 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80. Northeast wind 6 to 8 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 10am, then a slight chance of showers. Cloudy, with a high near 80. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Northeast wind 7 to 10 mph.
Friday
Sunny, with a high near 81. Northeast wind 7 to 10 mph.
Friday Night
Mostly clear, with a low around 61. Northeast wind 6 to 9 mph.
Saturday
Sunny, with a high near 80. Northeast wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.31°W (Elev. 525 ft)
Last Update:
4:56 am CDT Jul 31, 2025
Forecast Valid:
8am CDT Jul 31, 2025-6pm CDT Aug 6, 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