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.

Mostly Cloudy

66°F

19°C

Humidity 68%
Wind Speed NW 12 mph
Barometer 30.24 in (1023.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 10 Apr 10:51 am CDT
Extended Forecast for

Florissant MO

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Cloudy, with a temperature falling to around 65 by 2pm. West wind 8 to 10 mph becoming north in the afternoon.

    High: 71 °F⇓

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 52. North wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Southeast wind around 9 mph.

    High: 73 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62. Southeast wind around 9 mph.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. South wind 10 to 17 mph, with gusts as high as 30 mph.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Cloudy, with a temperature falling to around 65 by 2pm. West wind 8 to 10 mph becoming north in the afternoon.
Tonight
A chance of showers, with thunderstorms also possible after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 52. North wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 30%.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Southeast wind around 9 mph.
Saturday Night
Partly cloudy, with a low around 62. Southeast wind around 9 mph.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. South wind 10 to 17 mph, with gusts as high as 30 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 70.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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:
8:36 am CDT Apr 10, 2026
Forecast Valid:
11am CDT Apr 10, 2026-6pm CDT Apr 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