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 Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

76°F

24°C

Humidity	95%
Wind Speed	Calm
Barometer	30.04 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	75°F (24°C)
Last update	15 Aug 5:35 am CDT

More Information:

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

Extended Forecast for

Bethalto IL

Extreme Heat Warning August 15, 05:48am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 15, 05:48am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Overnight
Low: 76 °F
Slight Chance
T-storms
Saturday
High: 92 °F
Chance
T-storms then
Partly Sunny
Saturday Night
Low: 76 °F
Mostly Clear
Sunday
High: 91 °F
Mostly Sunny
Sunday Night
Low: 71 °F
Slight Chance
T-storms then
Slight Chance
Showers
Monday
High: 83 °F
Mostly Sunny
Monday Night
Low: 66 °F
Partly Cloudy
Tuesday
High: 87 °F
Sunny

Detailed Forecast

Overnight

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Light south wind.

Saturday

A 30 percent chance of showers and thunderstorms, mainly before 9am. Partly sunny, with a high near 92. Heat index values as high as 106. Northwest wind 5 to 9 mph becoming southeast in the morning.

Saturday Night

Mostly clear, with a low around 76. West wind around 5 mph becoming calm.

Sunday

Mostly sunny, with a high near 91. Heat index values as high as 105. West wind 6 to 9 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 71. North wind 6 to 10 mph. Chance of precipitation is 20%.

Monday

Mostly sunny, with a high near 83.

Monday Night

Partly cloudy, with a low around 66.

Tuesday

Sunny, with a high near 87.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.

Wednesday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

Wednesday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.