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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 >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

91°F

33°C

Humidity 56%
Wind Speed S 16 G 24 mph
Barometer 29.80 in (1007.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 10 Jun 3:51 pm CDT
Extended Forecast for

Florissant MO

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Partly cloudy, with a low around 76. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Heat index values as high as 105. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and midnight. Low around 65. Southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%.

    Low: 65 °F

    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 85. Northwest wind around 6 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Partly cloudy, with a low around 76. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday
Sunny and hot, with a high near 97. Heat index values as high as 105. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.
Thursday Night
Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and midnight. Low around 65. Southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%.
Friday
Sunny, with a high near 85. Northwest wind around 6 mph.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Saturday Night
Showers and possibly a thunderstorm. Low around 69. Chance of precipitation is 80%.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 80.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Monday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.34°W (Elev. 499 ft)
Last Update:
4:06 pm CDT Jun 10, 2026
Forecast Valid:
4pm CDT Jun 10, 2026-6pm CDT Jun 17, 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