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

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

34°F

1°C

Humidity 46%
Wind Speed SE 13 mph
Barometer 30.08 in (1019.9 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 18 Mar 12:51 am CDT
Extended Forecast for

Saint Louis MO

  • Overnight

    Overnight: A chance of flurries before 4am. Cloudy, with a low around 32. South wind around 11 mph, with gusts as high as 23 mph.

    Low: 32 °F

    Chance
    Flurries

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 65. South wind 6 to 9 mph becoming west in the afternoon.

    High: 65 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. Calm wind becoming south around 5 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 74. South wind 5 to 7 mph becoming northwest in the afternoon.

    High: 74 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. North wind around 5 mph becoming calm after midnight.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of flurries before 4am. Cloudy, with a low around 32. South wind around 11 mph, with gusts as high as 23 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 65. South wind 6 to 9 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 46. Calm wind becoming south around 5 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 74. South wind 5 to 7 mph becoming northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 46. North wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.64°N 90.26°W (Elev. 499 ft)
Last Update:
1:06 am CDT Mar 18, 2026
Forecast Valid:
1am CDT Mar 18, 2026-6pm CDT Mar 24, 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