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.

Overcast

34°F

1°C

Humidity 73%
Wind Speed E 8 mph
Barometer 30.15 in (1021.9 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 2 Feb 9:51 pm CST
Extended Forecast for

Florissant MO

  • Tonight

    Tonight: A 20 percent chance of snow after 3am. Mostly cloudy, with a low around 30. Northeast wind 3 to 6 mph.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A chance of snow and freezing rain before 10am, then a slight chance of drizzle or freezing rain between 10am and 11am. Mostly cloudy, with a high near 34. North wind 5 to 9 mph. Chance of precipitation is 30%.

    High: 34 °F

    Chance Wintry
    Mix then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. North wind 3 to 6 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31. North wind 3 to 6 mph.

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17. Light and variable wind.

    Low: 17 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of snow after 3am. Mostly cloudy, with a low around 30. Northeast wind 3 to 6 mph.
Tuesday
A chance of snow and freezing rain before 10am, then a slight chance of drizzle or freezing rain between 10am and 11am. Mostly cloudy, with a high near 34. North wind 5 to 9 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 20. North wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 31. North wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 17. Light and variable wind.
Thursday
Partly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 33.
Friday
Mostly sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 24.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.31°W (Elev. 525 ft)
Last Update:
10:06 pm CST Feb 2, 2026
Forecast Valid:
10pm CST Feb 2, 2026-6pm CST Feb 9, 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