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.

A Few Clouds

65°F

18°C

Humidity 49%
Wind Speed S 12 mph
Barometer 30.01 in (1015.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 30 Mar 3:51 am CDT
Extended Forecast for

Florissant MO

  • Today

    Today: Mostly sunny, with a high near 85. Southwest wind 10 to 18 mph, with gusts as high as 32 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 66. South wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 66 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of rain, then a chance of rain and thunderstorms after 10am. Mostly sunny, with a high near 86. Breezy, with a southwest wind 13 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Southwest wind 8 to 11 mph becoming north after midnight. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    T-storms then
    Rain Likely

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 75. Northeast wind 8 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 80%.

    High: 75 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.

    Low: 63 °F

    Rain

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 76. Chance of precipitation is 90%.

    High: 76 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Rain Likely

  • Friday

    Friday: A chance of rain and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 85. Southwest wind 10 to 18 mph, with gusts as high as 32 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 66. South wind 8 to 14 mph, with gusts as high as 23 mph.
Tuesday
A slight chance of rain, then a chance of rain and thunderstorms after 10am. Mostly sunny, with a high near 86. Breezy, with a southwest wind 13 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Southwest wind 8 to 11 mph becoming north after midnight. Chance of precipitation is 70%.
Wednesday
Rain and possibly a thunderstorm. High near 75. Northeast wind 8 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
Thursday
Rain and possibly a thunderstorm. High near 76. Chance of precipitation is 90%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Friday
A chance of rain and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Friday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Saturday
Rain and thunderstorms likely. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 42.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 59.
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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:
1:25 am CDT Mar 30, 2026
Forecast Valid:
4am CDT Mar 30, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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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