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.

Fair

84°F

29°C

Humidity	70%
Wind Speed	SE 7 mph
Barometer	30.10 in (1018.8 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	15 Aug 10:53 am CDT

More Information:

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

Extended Forecast for

Alorton IL

Extreme Heat Warning August 15, 11:10am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 15, 11:10am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Today
High: 96 °F
Decreasing
Clouds
Tonight
Low: 78 °F
Mostly Clear
Sunday
High: 97 °F
Hot
Sunday Night
Low: 74 °F
Chance
T-storms then
Chance
Showers
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 69 °F
Partly Cloudy
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 75 °F
Mostly Clear
then Slight
Chance
T-storms

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 111. Southeast wind around 7 mph becoming southwest in the afternoon.

Tonight

Mostly clear, with a low around 78. Calm wind becoming southwest around 5 mph after midnight.

Sunday

Mostly sunny and hot, with a high near 97. Heat index values as high as 113. West wind 5 to 8 mph.

Sunday Night

A chance of showers and thunderstorms. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 74. North wind 3 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 69.

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 75.

Wednesday

A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 93. Chance of precipitation is 20%.

Wednesday Night

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