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

36°F

2°C

Humidity 59%
Wind Speed Calm
Barometer 30.19 in (1023.5 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 2 Feb 11:51 am CST
Extended Forecast for

Florissant MO

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 37. Light and variable wind.

    High: 37 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of freezing rain after 3am. Mostly cloudy, with a low around 29. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Tuesday

    Tuesday: A chance of freezing rain before 7am, then a chance of snow between 7am 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
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 18. North wind around 6 mph becoming calm in the evening.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

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

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly 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 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 37. Light and variable wind.
Tonight
A slight chance of freezing rain after 3am. Mostly cloudy, with a low around 29. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.
Tuesday
A chance of freezing rain before 7am, then a chance of snow between 7am 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 18. North wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 31. Northwest wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 33.
Friday
Mostly sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 21.
Saturday
Sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.78°N 90.34°W (Elev. 528 ft)
Last Update:
10:27 am CST Feb 2, 2026
Forecast Valid:
12pm CST Feb 2, 2026-6pm CST Feb 8, 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