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

42°F

6°C

Humidity 85%
Wind Speed Calm
Barometer 30.08 in (1019.1 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 10 Jan 12:51 am CST
Extended Forecast for

Florissant MO

  • Overnight

    Overnight: A 30 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 38. Calm wind becoming northwest around 5 mph.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: A 40 percent chance of rain, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 47. Northwest wind 7 to 16 mph, with gusts as high as 26 mph.

    High: 47 °F

    Chance Rain
    then Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 26. Northwest wind 10 to 16 mph, with gusts as high as 28 mph.

    Low: 26 °F

    Gradual
    Clearing

  • Sunday

    Sunday: Sunny, with a high near 39. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 39 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 28. Southwest wind 3 to 7 mph.

    Low: 28 °F

    Clear

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 38. Calm wind becoming northwest around 5 mph.
Saturday
A 40 percent chance of rain, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 47. Northwest wind 7 to 16 mph, with gusts as high as 26 mph.
Saturday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 26. Northwest wind 10 to 16 mph, with gusts as high as 28 mph.
Sunday
Sunny, with a high near 39. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Clear, with a low around 28. Southwest wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.31°W (Elev. 525 ft)
Last Update:
1:06 am CST Jan 10, 2026
Forecast Valid:
1am CST Jan 10, 2026-6pm CST Jan 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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