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 Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

77°F

25°C

Humidity	94%
Wind Speed	Calm
Barometer	30.01 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	15 Aug 3:55 am CDT

More Information:

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

Extended Forecast for

Marine IL

Extreme Heat Warning August 15, 04:04am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 15, 04:04am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Today
High: 92 °F
Slight Chance
T-storms then
Mostly Sunny
Tonight
Low: 76 °F
Increasing
Clouds
Sunday
High: 92 °F
Partly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Monday
High: 85 °F
Mostly Sunny
Monday Night
Low: 66 °F
Partly Cloudy
Tuesday
High: 87 °F
Sunny
Tuesday Night
Low: 72 °F
Mostly Clear
then Slight
Chance
T-storms

Detailed Forecast

Today

A slight chance of showers and thunderstorms between 8am and 11am. Partly sunny, with a high near 92. Heat index values as high as 109. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 20%.

Tonight

Increasing clouds, with a low around 76. Light south wind.

Sunday

A 20 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, then becoming sunny during the afternoon, with a high near 92. Heat index values as high as 108. Northwest wind 5 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 72. North wind 3 to 8 mph. Chance of precipitation is 30%.

Monday

Mostly sunny, with a high near 85. North wind 5 to 7 mph.

Monday Night

Partly cloudy, with a low around 66.

Tuesday

Sunny, with a high near 87.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.

Wednesday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

Wednesday Night

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68.