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.

A Few Clouds

24°F

-4°C

Humidity 48%
Wind Speed W 7 mph
Barometer 30.11 in (1021.0 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 15 Jan 10:51 am CST
Extended Forecast for

Florissant MO

  • Today

    Today: Sunny, with a high near 35. West wind 6 to 8 mph becoming south in the afternoon.

    High: 35 °F

    Sunny

  • Tonight

    Tonight: A chance of snow before midnight, then scattered flurries after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 30. South wind 7 to 10 mph becoming west after midnight. Chance of precipitation is 50%.

    Low: 30 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 44. West wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 44 °F

    Partly Sunny

  • Friday Night

    Friday Night: Scattered snow showers. Mostly cloudy, with a low around 21. West wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    Low: 21 °F

    Scattered
    Snow Showers

  • Saturday

    Saturday: Partly sunny, with a high near 25. West wind 13 to 15 mph, with gusts as high as 24 mph.

    High: 25 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 35. West wind 6 to 8 mph becoming south in the afternoon.
Tonight
A chance of snow before midnight, then scattered flurries after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 30. South wind 7 to 10 mph becoming west after midnight. Chance of precipitation is 50%.
Friday
Partly sunny, with a high near 44. West wind 11 to 16 mph, with gusts as high as 26 mph.
Friday Night
Scattered snow showers. Mostly cloudy, with a low around 21. West wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 25. West wind 13 to 15 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 12.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Mostly sunny, with a high near 25.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Mostly sunny, with a high near 44.
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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:
9:31 am CST Jan 15, 2026
Forecast Valid:
11am CST Jan 15, 2026-6pm CST Jan 21, 2026
 
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