Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Hazardous Weather Conditions

Extreme Heat Warning until August 15, 09:00 PM CDT

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

77°F

25°C

Humidity	90%
Wind Speed	Calm
Barometer	29.84 in (1008.9 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	13 Aug 2:51 am CDT

More Information:

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

Extended Forecast for

Spanish Lake MO

Extreme Heat Warning August 13, 03:35am until August 15, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 13, 03:35am until August 15, 09:00pm
NOW until 9:00pm Sat
Extreme Heat Warning
Overnight
Low: 74 °F
Chance
Showers
Thursday
High: 95 °F
Chance
Showers
Thursday Night
Low: 77 °F
Slight Chance
T-storms then
Partly Cloudy
Friday
High: 97 °F
Hot
Friday Night
Low: 78 °F
Mostly Clear
Saturday
High: 98 °F
Hot
Saturday Night
Low: 79 °F
Mostly Clear
Sunday
High: 97 °F
Hot

Detailed Forecast

Overnight

A slight chance of showers and thunderstorms, then a chance of showers after 4am. Mostly cloudy, with a low around 74. Light southeast wind. Chance of precipitation is 30%.

Thursday

A chance of showers and thunderstorms before 11am, then a slight chance of showers after 3pm. Partly sunny, with a high near 95. Heat index values as high as 110. South wind 3 to 7 mph. Chance of precipitation is 30%.

Thursday Night

A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77. Southeast wind around 7 mph.

Friday

Partly sunny, then gradually becoming sunny and hot, with a high near 97. Heat index values as high as 110. Light and variable wind becoming south around 6 mph in the morning.

Friday Night

Mostly clear, with a low around 78. Southeast wind around 6 mph.

Saturday

Sunny and hot, with a high near 98.

Saturday Night

Mostly clear, with a low around 79.

Sunday

Sunny and hot, with a high near 97.

Sunday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.

Monday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.