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

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

84°F

29°C

Humidity 51%
Wind Speed S 18 G 26 mph
Barometer 29.82 in (1008.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 Apr 1:51 pm CDT
Extended Forecast for

Saint Louis MO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind around 14 mph, with gusts as high as 25 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 49. South wind 10 to 14 mph becoming west in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 100%.

    Low: 49 °F

    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 8am. Cloudy through mid morning, then gradual clearing, with a high near 59. Northwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 59 °F

    Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 42. Northwest wind 5 to 10 mph.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind around 14 mph, with gusts as high as 25 mph.
Tonight
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 49. South wind 10 to 14 mph becoming west in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 100%.
Saturday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 8am. Cloudy through mid morning, then gradual clearing, with a high near 59. Northwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday Night
Clear, with a low around 42. Northwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 67. West wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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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:
1:16 pm CDT Apr 17, 2026
Forecast Valid:
2pm CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation