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.

A Few Clouds

74°F

23°C

Humidity 74%
Wind Speed N 3 mph
Barometer 30.02 in (1015.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 14 Jun 9:51 pm CDT
Extended Forecast for

Florissant MO

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 67. Northeast wind 3 to 5 mph.

    Low: 67 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 86. Northeast wind around 6 mph.

    High: 86 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Northeast wind around 6 mph becoming calm after midnight.

    Low: 70 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 71. Southeast wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.

    High: 88 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 67. Northeast wind 3 to 5 mph.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 86. Northeast wind around 6 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Northeast wind around 6 mph becoming calm after midnight.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 71. Southeast wind 3 to 5 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72.
Juneteenth
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 69.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 93.
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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:
9:52 pm CDT Jun 14, 2025
Forecast Valid:
10pm CDT Jun 14, 2025-6pm CDT Jun 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation