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

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

73°F

23°C

Humidity 84%
Wind Speed SW 6 mph
Barometer 30.03 in (1015.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 3 Jul 5:51 am CDT
Extended Forecast for

Florissant MO

  • Today

    Today: Sunny, with a high near 92. Light west wind.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. Light south wind.

    Low: 74 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. South wind 3 to 7 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95. South wind 3 to 8 mph.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77.

    Low: 77 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 92. Light west wind.
Tonight
Mostly clear, with a low around 74. Light south wind.
Independence Day
Sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 75. South wind 3 to 7 mph.
Saturday
Sunny, with a high near 95. South wind 3 to 8 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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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:
6:21 am CDT Jul 3, 2025
Forecast Valid:
6am CDT Jul 3, 2025-6pm CDT Jul 9, 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