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.

Overcast

78°F

26°C

Humidity	89%
Wind Speed	N 3 mph
Barometer	30.08 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	15 Aug 5:55 am CDT

More Information:

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

Extended Forecast for

Hillsboro IL

Heat Advisory August 15, 06:16am until August 16, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 15, 06:16am 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
Partly Cloudy
then Slight
Chance
T-storms
Sunday
High: 89 °F
Partly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 68 °F
Slight Chance
T-storms then
Slight Chance
Showers
Monday
High: 83 °F
Mostly Sunny
Monday Night
Low: 64 °F
Partly Cloudy
Tuesday
High: 86 °F
Sunny
Tuesday Night
Low: 69 °F
Mostly Clear
then Chance
T-storms

Detailed Forecast

Today

Showers and thunderstorms likely, mainly before 11am. Mostly cloudy, with a high near 89. Heat index values as high as 103. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 60%.

Tonight

A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 74. Light southwest wind.

Sunday

A 20 percent chance of showers and thunderstorms, mainly between 1pm and 2pm. Partly sunny, with a high near 89. Heat index values as high as 103. West wind 3 to 7 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 5 mph. Chance of precipitation is 20%.

Monday

Mostly sunny, with a high near 83. North wind 3 to 5 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 69.

Wednesday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87.

Wednesday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.