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

80°F

27°C

Humidity	79%
Wind Speed	Calm
Barometer	30.01 in (1015.6 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	84°F (29°C)
Last update	16 Aug 4:53 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 16, 05:21am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 16, 05:21am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Today
High: 97 °F
Hot
Tonight
Low: 71 °F
Chance
T-storms
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 65 °F
Mostly Clear
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 70 °F
Partly Cloudy
then Chance
T-storms
Wednesday
High: 91 °F
Chance
Showers
Wednesday Night
Low: 67 °F
Chance
T-storms

Detailed Forecast

Today

Partly sunny and hot, with a high near 97. Heat index values as high as 113. Light and variable wind becoming northwest around 6 mph in the morning.

Tonight

A 30 percent chance of showers and thunderstorms, mainly between 7pm and 4am. Mostly cloudy, with a low around 71. North wind 3 to 6 mph.

Monday

Mostly sunny, with a high near 87. North wind 5 to 7 mph.

Monday Night

Mostly clear, with a low around 65. Calm wind.

Tuesday

Sunny, with a high near 91. Calm wind.

Tuesday Night

A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.

Wednesday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 91.

Wednesday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.

Thursday

A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83.

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 85.

Friday Night

Partly cloudy, with a low around 63.

Saturday

Mostly sunny, with a high near 86.