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

Heat Advisory until August 16, 09:00 PM CDT

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

79°F

26°C

Humidity	79%
Wind Speed	SE 7 mph
Barometer	30.12 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	15 Aug 9:50 am CDT

More Information:

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

Extended Forecast for

Dorchester IL

Heat Advisory August 15, 10:41am until August 16, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 15, 10:41am until August 16, 09:00pm
NOW until 9:00pm Sun
Heat Advisory
Today
High: 89 °F
T-storms
Likely then
Partly Sunny
Tonight
Low: 74 °F
Mostly Clear
then Slight
Chance
T-storms
Sunday
High: 90 °F
Decreasing
Clouds
Sunday Night
Low: 68 °F
Slight Chance
T-storms then
Slight Chance
Showers
Monday
High: 84 °F
Mostly Sunny
Monday Night
Low: 64 °F
Partly Cloudy
Tuesday
High: 86 °F
Sunny
Tuesday Night
Low: 70 °F
Mostly Clear
then Chance
T-storms

Detailed Forecast

Today

Showers and thunderstorms likely, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 89. Heat index values as high as 103. East wind around 7 mph becoming southwest in the afternoon. Chance of precipitation is 60%.

Tonight

A slight chance of showers and thunderstorms between 4am and 5am. Mostly clear, with a low around 74. Light and variable wind. Chance of precipitation is 20%.

Sunday

Mostly cloudy, then gradually becoming sunny, with a high near 90. Heat index values as high as 103. West wind 5 to 8 mph.

Sunday Night

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 68. North wind 3 to 8 mph. Chance of precipitation is 20%.

Monday

Mostly sunny, with a high near 84. North wind around 6 mph.

Monday Night

Partly cloudy, with a low around 64.

Tuesday

Sunny, with a high near 86.

Tuesday Night

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.

Wednesday

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

Wednesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.