Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

82°F

28°C

Humidity	46%
Wind Speed	E 6 mph
Barometer	30.02 in (1016.4 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	24 Aug 3:53 pm CDT

More Information:

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

Extended Forecast for

Herculaneum MO

Tonight
Low: 65 °F
Partly Cloudy
Tuesday
High: 87 °F
Mostly Sunny
Tuesday Night
Low: 67 °F
Mostly Cloudy
Wednesday
High: 90 °F
Partly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 67 °F
Slight Chance
T-storms
Thursday
High: 88 °F
Sunny
Thursday Night
Low: 64 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 64 °F
Mostly Clear

Detailed Forecast

Tonight

Partly cloudy, with a low around 65. Light east wind.

Tuesday

Mostly sunny, with a high near 87. Calm wind becoming southeast around 5 mph.

Tuesday Night

Mostly cloudy, with a low around 67. Calm wind.

Wednesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 90. Light and variable wind.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 67. Calm wind.

Thursday

Sunny, with a high near 88.

Thursday Night

Mostly clear, with a low around 64.

Friday

Sunny, with a high near 87.

Friday Night

Mostly clear, with a low around 64.

Saturday

Sunny, with a high near 90.