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.

Mostly Cloudy

81°F

27°C

Humidity 33%
Wind Speed SW 13 mph
Barometer 29.87 in (1011.1 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 Mar 4:51 pm CDT
Extended Forecast for

Florissant MO

  • Tonight

    Tonight: Mostly clear, with a low around 65. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm. Low around 44. Southwest wind 10 to 18 mph becoming north after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Rain Likely
    then Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. North wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 65. South wind around 11 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 92. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Rain and possibly a thunderstorm. Low around 44. Southwest wind 10 to 18 mph becoming north after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind 15 to 18 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 33. North wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Partly sunny, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 55.
Monday
A 20 percent chance of rain and thunderstorms before 1pm. Mostly sunny, with a high near 80.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 62.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 64.
Wednesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.31°W (Elev. 525 ft)
Last Update:
4:31 pm CDT Mar 25, 2026
Forecast Valid:
5pm CDT Mar 25, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation