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.

Light Rain

80°F

27°C

Humidity	92%
Wind Speed	Calm
Barometer	30.04 in
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	15 Aug 11:55 pm CDT

More Information:

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

Extended Forecast for

Roxana IL

Extreme Heat Warning August 16, 12:08am until August 16, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 16, 12:08am until August 16, 09:00pm
NOW until 9:00pm Sun
Extreme Heat Warning
Overnight
Low: 76 °F
Slight Chance
T-storms
Sunday
High: 91 °F
Chance
T-storms
Sunday Night
Low: 71 °F
Chance
T-storms
Monday
High: 85 °F
Mostly Sunny
Monday Night
Low: 65 °F
Mostly Clear
Tuesday
High: 88 °F
Sunny
Tuesday Night
Low: 71 °F
Partly Cloudy
then Slight
Chance
T-storms
Wednesday
High: 88 °F
Slight Chance
Showers then
Slight Chance
T-storms

Detailed Forecast

Overnight

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

Sunday

A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 91. Heat index values as high as 108. West wind 6 to 9 mph. Chance of precipitation is 30%.

Sunday Night

A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 71. North wind 3 to 7 mph.

Monday

Mostly sunny, with a high near 85. North wind 6 to 9 mph.

Monday Night

Mostly clear, with a low around 65. North wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 88.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.

Wednesday

A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 20%.