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

Storms in the East; Monsoons and Fire Weather Out West

A slow moving frontal system will bring strong to severe storms, and, locally heavy rain from the Plains to the Northeast. Monsoon moisture shifts to the east into portions of the southern Plains and may produce excessive rains across portions of the High Plains and desert southwest. Fire Weather threats remain elevated to critical with isolated dry thunderstorms in the Intermountain West. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

76°F

24°C

Humidity 85%
Wind Speed SW 12 mph
Barometer 29.98 in (1014.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 17 Aug 7:51 am CDT
Extended Forecast for

Saint Louis MO

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly before 11am. Mostly cloudy, with a high near 87. Northwest wind 6 to 9 mph.

    Chance
    T-storms

    High: 87 °F

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 71. Northwest wind around 6 mph becoming calm in the evening.

    Slight Chance
    T-storms and
    Patchy Fog

    Low: 71 °F

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 87. North wind 5 to 7 mph.

    Patchy Fog
    then Mostly
    Sunny

    High: 87 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 69. Northeast wind around 6 mph becoming calm in the evening.

    Partly Cloudy

    Low: 69 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 88. Calm wind becoming southeast 5 to 7 mph in the morning.

    Mostly Sunny

    High: 88 °F

  • Sunday
    Night

    Sunday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Slight Chance
    T-storms then
    T-storms
    Likely

    Low: 71 °F

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.

    Chance
    T-storms

    High: 83 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67.

    Chance
    T-storms

    Low: 67 °F

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 81 °F

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly before 11am. Mostly cloudy, with a high near 87. Northwest wind 6 to 9 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 71. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 87. North wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 69. Northeast wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 88. Calm wind becoming southeast 5 to 7 mph in the morning.
Sunday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 82.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
Last Update:
8:12 am CDT Aug 17, 2018
Forecast Valid:
8am CDT Aug 17, 2018-6pm CDT Aug 23, 2018
 
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