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.

Overcast

39°F

4°C

Humidity 93%
Wind Speed E 9 mph
Barometer 30.23 in (1024.4 mb)
Dewpoint 37°F (3°C)
Visibility 8.00 mi
Wind Chill33°F (1°C)
Last update 2 Mar 12:51 pm CST
Extended Forecast for

Florissant MO

  • This Afternoon

    This Afternoon: A 20 percent chance of rain before 5pm. Cloudy, with a high near 43. East wind 6 to 8 mph.

    High: 43 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A slight chance of rain before 3am, then a chance of rain and thunderstorms between 3am and 4am, then rain and possibly a thunderstorm after 4am. Low around 39. East wind around 6 mph. Chance of precipitation is 90%.

    Low: 39 °F

    Cloudy then
    Rain

  • Tuesday

    Tuesday: Rain and thunderstorms before 3pm, then rain and possibly a thunderstorm, mainly after 3pm. High near 59. Southeast wind around 6 mph. Chance of precipitation is 100%.

    High: 59 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, with thunderstorms also possible after 9pm. Patchy fog between 11pm and midnight. Low around 50. Northeast wind around 6 mph. Chance of precipitation is 90%.

    Low: 50 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 65. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 90%.

    High: 65 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm before midnight, then rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Rain

  • Thursday

    Thursday: Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and noon, then a chance of rain and thunderstorms after noon. Partly sunny, with a high near 71. Chance of precipitation is 70%.

    High: 71 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain, with thunderstorms also possible after midnight. Partly cloudy, with a low around 56. Chance of precipitation is 50%.

    Low: 56 °F

    Chance Rain

  • Friday

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

    High: 79 °F

    Chance
    T-storms then
    Chance Rain

Detailed Forecast

This Afternoon
A 20 percent chance of rain before 5pm. Cloudy, with a high near 43. East wind 6 to 8 mph.
Tonight
A slight chance of rain before 3am, then a chance of rain and thunderstorms between 3am and 4am, then rain and possibly a thunderstorm after 4am. Low around 39. East wind around 6 mph. Chance of precipitation is 90%.
Tuesday
Rain and thunderstorms before 3pm, then rain and possibly a thunderstorm, mainly after 3pm. High near 59. Southeast wind around 6 mph. Chance of precipitation is 100%.
Tuesday Night
Rain, with thunderstorms also possible after 9pm. Patchy fog between 11pm and midnight. Low around 50. Northeast wind around 6 mph. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. High near 65. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 90%.
Wednesday Night
Rain and possibly a thunderstorm before midnight, then rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Low around 56. Chance of precipitation is 90%.
Thursday
Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and noon, then a chance of rain and thunderstorms after noon. Partly sunny, with a high near 71. Chance of precipitation is 70%.
Thursday Night
A chance of rain, with thunderstorms also possible after midnight. Partly cloudy, with a low around 56. Chance of precipitation is 50%.
Friday
A chance of rain and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Saturday
Rain and thunderstorms likely. Cloudy, with a high near 70. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 48.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 65.
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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:
12:26 pm CST Mar 2, 2026
Forecast Valid:
1pm CST Mar 2, 2026-6pm CDT Mar 8, 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