Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Extreme Heat Warning until August 16, 09:00 PM CDT

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

79°F

26°C

Humidity	79%
Wind Speed	NE 12 mph
Barometer	30.12 in (1018.6 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	15 Aug 7:51 am CDT

More Information:

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

Extended Forecast for

Earth City MO

Extreme Heat Warning August 15, 08:53am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 15, 08:53am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Today
High: 95 °F
Chance
T-storms then
Mostly Sunny
Tonight
Low: 79 °F
Increasing
Clouds
Sunday
High: 95 °F
Decreasing
Clouds
Sunday Night
Low: 73 °F
Chance
T-storms then
Chance
Showers
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 70 °F
Partly Cloudy
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 76 °F
Mostly Clear
then Slight
Chance
T-storms

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 95. Heat index values as high as 109. Northeast wind 5 to 8 mph becoming southwest in the afternoon.

Tonight

Increasing clouds, with a low around 79. Calm wind becoming southwest around 5 mph after midnight.

Sunday

Mostly cloudy, then gradually becoming sunny, with a high near 95. Heat index values as high as 109. West wind 6 to 8 mph.

Sunday Night

A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 73. North wind 5 to 8 mph. Chance of precipitation is 30%.

Monday

Mostly sunny, with a high near 87. North wind 5 to 7 mph.

Monday Night

Partly cloudy, with a low around 70.

Tuesday

Sunny, with a high near 91.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76.

Wednesday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.

Wednesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.