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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

81°F

27°C

Humidity	74%
Wind Speed	E 6 mph
Barometer	30.13 in (1019.7 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	15 Aug 8:53 am CDT

More Information:

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

Extended Forecast for

Festus MO

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

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 15, 09:09am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Today
High: 99 °F
Hot
Tonight
Low: 75 °F
Mostly Clear
Sunday
High: 98 °F
Hot
Sunday Night
Low: 71 °F
Chance
T-storms then
Chance
Showers
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 66 °F
Partly Cloudy
Tuesday
High: 92 °F
Sunny
Tuesday Night
Low: 72 °F
Mostly Clear
then Slight
Chance
T-storms

Detailed Forecast

Today

Mostly sunny and hot, with a high near 99. Heat index values as high as 112. Light and variable wind becoming southwest around 5 mph in the afternoon.

Tonight

Mostly clear, with a low around 75. Light south wind.

Sunday

Mostly sunny and hot, with a high near 98. Heat index values as high as 114. West wind 3 to 6 mph.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light north wind. Chance of precipitation is 30%.

Monday

Mostly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.

Monday Night

Partly cloudy, with a low around 66.

Tuesday

Sunny, with a high near 92.