National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Severe Thunderstorms Threaten the Southern U.S. Again Thursday

A Moderate Risk (Level 3 of 4) Excessive Rainfall Outlook and Flood Watches have been issued for portions of east Texas into Louisiana Thursday where flash, urban, and riverine flooding is possible. A Slight Risk (Level 2 of 5) for scattered severe thunderstorms has been issued from west Texas to the lower Mississippi Valley Thursday afternoon into Thursday night. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

71°F

22°C

Humidity 76%
Wind Speed S 3 mph
Barometer 29.86 in (1010.5 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 16 May 12:51 pm CDT
Extended Forecast for

Florissant MO

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 73. Southwest wind around 9 mph.

    High: 73 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southwest wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Chance
    T-storms

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 76. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 73. Southwest wind around 9 mph.
Tonight
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southwest wind around 6 mph becoming calm in the evening.
Friday
Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 76. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 82. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 67.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Tuesday Night
Showers and thunderstorms likely. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.31°W (Elev. 525 ft)
Last Update:
12:07 pm CDT May 16, 2024
Forecast Valid:
1pm CDT May 16, 2024-6pm CDT May 22, 2024
 
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