National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Coastal Impacts to the Mid-Atlantic and Northeast; Tropical Storm Nolo to Impact Hawaii

A strong coastal storm will bring moderate to major coastal flooding, strong winds, heavy rainfall and high surf to the Mid-Atlantic and New England. Tropical Storm Nolo is expected to strengthen into a hurricane Thursday as it moves north toward the Big Island of Hawaii. Heavy rainfall will continue through Saturday, with locally catastrophic flooding possible. Hurricane Watch in effect. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

63°F

17°C

Humidity 76%
Wind Speed N 5 mph
Barometer 30.27 in (1024.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 24 Sep 4:51 am CDT
Extended Forecast for

Florissant MO

  • Today

    Today: Mostly cloudy, with a high near 72. Northeast wind 3 to 6 mph.

    High: 72 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. Light northeast wind.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon.

    High: 80 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63. East wind around 5 mph.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers. Mostly cloudy, with a high near 73. Southeast wind 3 to 5 mph.

    High: 73 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Cloudy then
    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 72. Northeast wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 63. Light northeast wind.
Friday
Partly sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 63. East wind around 5 mph.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 73. Southeast wind 3 to 5 mph.
Saturday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 61.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 76.
Sunday Night
Mostly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Wednesday
Showers likely. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.34°W (Elev. 499 ft)
Last Update:
1:26 am CDT Sep 24, 2026
Forecast Valid:
4am CDT Sep 24, 2026-6pm CDT Sep 30, 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