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 15, 09:00 PM CDT

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

89°F

32°C

Humidity	63%
Wind Speed	SE 7 mph
Barometer	30.05 in (1017.1 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	14 Aug 11:53 am CDT

More Information:

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

Extended Forecast for

Mascoutah IL

Extreme Heat Warning August 14, 12:54pm until August 15, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 14, 12:54pm until August 15, 09:00pm
NOW until 9:00pm Sat
Extreme Heat Warning
This Afternoon
High: 96 °F
Slight Chance
T-storms
Tonight
Low: 76 °F
Mostly Clear
Saturday
High: 98 °F
Hot
Saturday Night
Low: 76 °F
Mostly Clear
Sunday
High: 96 °F
Mostly Sunny
Sunday Night
Low: 72 °F
Slight Chance
T-storms then
Chance
Showers
Monday
High: 87 °F
Slight Chance
Showers then
Slight Chance
T-storms
Monday Night
Low: 67 °F
Partly Cloudy

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms before 3pm. Mostly sunny, with a high near 96. Heat index values as high as 110. South wind 3 to 5 mph.

Tonight

Mostly clear, with a low around 76. Southeast wind 3 to 5 mph.

Saturday

Mostly sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind becoming southwest around 6 mph in the morning.

Saturday Night

Mostly clear, with a low around 76. South wind 3 to 5 mph.

Sunday

Mostly sunny, with a high near 96. Light and variable wind becoming west around 6 mph in the morning.

Sunday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 50%.

Monday

A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.