Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

45°F

7°C

Humidity 63%
Wind Speed W 5 mph
Barometer 30.22 in (1023.3 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 19 Apr 12:51 am CDT
Extended Forecast for

Florissant MO

  • Overnight

    Overnight: Mostly clear, with a low around 41. West wind 3 to 5 mph.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. West wind 6 to 16 mph, with gusts as high as 30 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. North wind 5 to 8 mph becoming northeast after midnight.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Southeast wind around 8 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 41. West wind 3 to 5 mph.
Sunday
Sunny, with a high near 67. West wind 6 to 16 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 41. North wind 5 to 8 mph becoming northeast after midnight.
Monday
Sunny, with a high near 68. Light and variable wind becoming south 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 52. Southeast wind around 8 mph.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 49.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Florissant MO
 38.8°N 90.31°W (Elev. 525 ft)
10:46 pm CDT Apr 18, 2026
12am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
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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