Lala Impacting Hawaii; Flash Flooding Risks; Excessive Heat

Lala will continue to impact Hawaii through the weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Thunderstorms, heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians and the mid-Atlantic through today. Record heat continues for areas of the Mississippi Valley into the Southeast. Read More >

Hazardous Weather Conditions

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

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Thunderstorm Light Rain Fog/Mist

76°F

24°C

Humidity	88%
Wind Speed	W 5 mph
Barometer	30.05 in (1016.8 mb)
Dewpoint	72°F (22°C)
Visibility	4.00 mi
Heat Index	76°F (24°C)
Last update	16 Aug 9:54 am CDT

More Information:

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

Extended Forecast for

Byrnes Mill MO

Extreme Heat Warning August 16, 10:30am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 16, 10:30am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Today
High: 93 °F
Chance
T-storms then
Mostly Sunny
Tonight
Low: 71 °F
Chance
T-storms
Monday
High: 86 °F
Mostly Sunny
Monday Night
Low: 66 °F
Mostly Clear
Tuesday
High: 90 °F
Sunny
Tuesday Night
Low: 71 °F
Partly Cloudy
then Chance
T-storms
Wednesday
High: 88 °F
Chance
Showers
Wednesday Night
Low: 68 °F
Chance
T-storms

Detailed Forecast

Today

A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 93. Heat index values as high as 111. West wind around 6 mph. Chance of precipitation is 50%.

Tonight

A 40 percent chance of showers and thunderstorms, mainly between 7pm and 3am. Mostly cloudy, with a low around 71. North wind 3 to 6 mph.

Monday

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

Monday Night

Mostly clear, with a low around 66. Calm wind.

Tuesday

Sunny, with a high near 90. Calm wind.

Tuesday Night

A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.

Wednesday

A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.

Wednesday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Thursday

A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82.

Thursday Night

A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

Friday

Mostly sunny, with a high near 84.

Friday Night

Partly cloudy, with a low around 65.

Saturday

Sunny, with a high near 85.