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NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

74°F

23°C

Humidity 69%
Wind Speed S 5 mph
Barometer 29.84 in (1009.4 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 16 May 5:51 am CDT
Extended Forecast for

Florissant MO

  • Today

    Today: Showers and thunderstorms likely, mainly before 11am. Mostly cloudy, with a high near 83. Southwest wind 7 to 10 mph. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Southeast wind around 8 mph.

    Low: 66 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 91. South wind 9 to 16 mph, with gusts as high as 28 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71. South wind 13 to 15 mph, with gusts as high as 23 mph.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. South wind 14 to 17 mph, with gusts as high as 30 mph.

    High: 90 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 87. Chance of precipitation is 80%.

    High: 87 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers. Mostly cloudy, with a high near 73.

    High: 73 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 11am. Mostly cloudy, with a high near 83. Southwest wind 7 to 10 mph. Chance of precipitation is 60%.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Southeast wind around 8 mph.
Sunday
Sunny, with a high near 91. South wind 9 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 71. South wind 13 to 15 mph, with gusts as high as 23 mph.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. South wind 14 to 17 mph, with gusts as high as 30 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Tuesday
Showers and possibly a thunderstorm. High near 87. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Partly sunny, with a high near 73.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.78°N 90.34°W (Elev. 528 ft)
Last Update:
6:01 am CDT May 16, 2026
Forecast Valid:
6am CDT May 16, 2026-6pm CDT May 22, 2026
 
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