Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75° N Lon: 90.37° W Elev: 604 ft.

Fair

80°F

27°C

Humidity	71%
Wind Speed	S 5 mph
Barometer	29.94 in (1012.6 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	18 Aug 11:51 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Detailed forecast for

St. Louis City

Tonight

Mostly clear. Patchy fog after midnight. Low in the lower to mid 70s. Light wind.

Monday

Hot and humid. Patchy fog in the morning. Partly cloudy with a 30 percent chance of showers and thunderstorms. High in the lower 90s. Highest heat index readings of around 100 in the afternoon. Light wind.

Monday Night

Mostly clear. A 20 percent chance of showers and thunderstorms in the evening. Low in the 70s. Light wind.

Tuesday

Hot and humid. Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. High in the mid 90s. Highest heat index readings of around 109 in the afternoon. Light wind.

Tuesday Night

Partly cloudy with a 30 percent chance of showers and thunderstorms. Low in the 70s. Highest heat index readings of around 100 early in the evening. Light wind.

Wednesday

Hot and humid. Mostly cloudy with a 40 percent chance of showers and thunderstorms. High around 90. Temperature falling into the 80s in the afternoon. Heat index readings of around 106.

Wednesday Night

Mostly cloudy with a 30 percent chance of showers and thunderstorms. Low around 70.

Thursday

Mostly cloudy with a 40 percent chance of showers and thunderstorms. High in the lower 80s.

Thursday Night

Partly cloudy with a 20 percent chance of showers and thunderstorms. Low in the mid 60s.

Friday

Partly cloudy with a 30 percent chance of showers and thunderstorms. High in the lower 80s.

Friday Night

Partly cloudy. Low in the mid 60s.

Saturday

Partly cloudy with a 20 percent chance of showers and thunderstorms. High in the mid 80s.