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Severe Thunderstorms in the Southeast U.S; Flash Flooding Threat for the Northern Gulf Coast

Severe thunderstorms are expected across portions of the Southeast and Carolinas today where a Slight Risk (Level 2 of 5) has been issued. A Slight Risk Excessive Rainfall Outlook (Level 2 of 4) has been issued for part of the northern Gulf Coast today due to the threat of flash, urban, and riverine flooding. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

80°F

27°C

Humidity 58%
Wind Speed S 8 mph
Barometer 29.93 in (1011.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 19 May 11:51 pm CDT
Extended Forecast for

Florissant MO

  • Overnight

    Overnight: A slight chance of showers and thunderstorms between 4am and 5am. Mostly clear, with a low around 71. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 88. South wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. South wind 7 to 9 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 93. South wind 9 to 18 mph, with gusts as high as 33 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Southwest wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 81.

    High: 81 °F

    Sunny then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 63.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms between 4am and 5am. Mostly clear, with a low around 71. South wind around 7 mph. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 88. South wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 69. South wind 7 to 9 mph.
Tuesday
Sunny, with a high near 93. South wind 9 to 18 mph, with gusts as high as 33 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Southwest wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 60.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 81.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 63.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.34°W (Elev. 499 ft)
Last Update:
10:37 pm CDT May 19, 2024
Forecast Valid:
12am CDT May 20, 2024-6pm CDT May 26, 2024
 
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