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.

Mostly Cloudy

80°F

27°C

Humidity	85%
Wind Speed	NE 10 mph
Barometer	30.11 in (1019.3 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	15 Aug 7:53 am CDT

More Information:

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

Extended Forecast for

3 Miles SE Swansea IL

Extreme Heat Warning August 15, 08:17am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 15, 08:17am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Today
High: 95 °F
Decreasing
Clouds
Tonight
Low: 77 °F
Mostly Clear
Sunday
High: 95 °F
Partly Sunny
Sunday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Monday
High: 86 °F
Mostly Sunny
Monday Night
Low: 67 °F
Partly Cloudy
Tuesday
High: 90 °F
Sunny
Tuesday Night
Low: 73 °F
Mostly Clear
then Slight
Chance
T-storms

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 95. Heat index values as high as 112. Northwest wind 5 to 7 mph becoming southeast in the morning.

Tonight

Mostly clear, with a low around 77. Calm wind becoming west around 5 mph after midnight.

Sunday

Partly sunny, with a high near 95. Heat index values as high as 112. West wind 5 to 7 mph.

Sunday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 72. North wind 3 to 8 mph. Chance of precipitation is 30%.

Monday

Mostly sunny, with a high near 86. North wind 5 to 7 mph.

Monday Night

Partly cloudy, with a low around 67.

Tuesday

Sunny, with a high near 90.