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, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66° N Lon: 90.66° W Elev: 463 ft.

Fair

90°F

32°C

Humidity	59%
Wind Speed	SE 8 mph
Barometer	30.03 in (1015.6 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	14 Aug 12:54 pm CDT

More Information:

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

Detailed forecast for

Jefferson County

This Afternoon

Mostly sunny. Hot with highs in the upper 90s. South winds around 5 mph. Heat index values up to 110.

Tonight

Mostly clear. Humid with lows in the mid 70s. South winds around 5 mph. Heat index values up to 104 early in the evening.

Saturday

Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 108.

Saturday Night

Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 105 early in the evening.

Sunday

Mostly sunny. Hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 111.

Sunday Night

Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 110 early in the evening.

Monday

Mostly sunny with a slight chance of showers and thunderstorms. Not as warm with highs in the upper 80s. Chance of rain 20 percent.

Monday Night

Partly cloudy. Lows in the upper 60s.

Tuesday And Tuesday Night

Mostly clear. Highs in the upper 80s. Lows in the lower 70s.

Wednesday

Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105 in the afternoon.

Wednesday Night

Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening.

Thursday

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.