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.

A Few Clouds

49°F

9°C

Humidity 44%
Wind Speed W 8 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 18 Apr 9:51 pm CDT
Extended Forecast for

Saint Louis MO

  • Tonight

    Tonight: Mostly clear, with a low around 41. Northwest wind 6 to 11 mph becoming light west after midnight.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. West wind 5 to 15 mph, with gusts as high as 28 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Northeast wind 3 to 7 mph.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Southeast wind around 7 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Tuesday Night

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

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

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

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 41. Northwest wind 6 to 11 mph becoming light west after midnight.
Sunday
Sunny, with a high near 68. West wind 5 to 15 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 43. Northeast wind 3 to 7 mph.
Monday
Sunny, with a high near 69. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 52. Southeast wind around 7 mph.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
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 76. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 51.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
Last Update:
10:46 pm CDT Apr 18, 2026
Forecast Valid:
10pm CDT Apr 18, 2026-6pm CDT Apr 25, 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