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.

Overcast

45°F

7°C

Humidity 93%
Wind Speed E 9 mph
Barometer 29.86 in (1011.6 mb)
Dewpoint 43°F (6°C)
Visibility 8.00 mi
Wind Chill40°F (4°C)
Last update 15 Feb 2:51 am CST
Extended Forecast for

Saint Louis MO

  • Overnight

    Overnight: Rain likely, mainly before 4am. Cloudy, with a low around 44. North wind around 8 mph. Chance of precipitation is 70%.

    Low: 44 °F

    Rain Likely

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 57. North wind 5 to 9 mph becoming light northwest in the afternoon.

    High: 57 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 39. Light and variable wind.

    Low: 39 °F

    Patchy Fog

  • Washington's Birthday

    Washington's Birthday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 64. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. South wind around 7 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Overnight
Rain likely, mainly before 4am. Cloudy, with a low around 44. North wind around 8 mph. Chance of precipitation is 70%.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 57. North wind 5 to 9 mph becoming light northwest in the afternoon.
Sunday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 39. Light and variable wind.
Washington's Birthday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 64. Light southwest wind becoming south 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 43. South wind around 7 mph.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
A 30 percent chance of showers after noon. Sunny, with a high near 72.
Thursday Night
A 20 percent chance of showers. Mostly clear, with a low around 40.
Friday
Mostly sunny, with a high near 53.
Friday Night
Partly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
Last Update:
2:41 am CST Feb 15, 2026
Forecast Valid:
3am CST Feb 15, 2026-6pm CST Feb 21, 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