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.

Mostly Cloudy

76°F

24°C

Humidity	60%
Wind Speed	SE 7 mph
Barometer	30.00 in (1015.7 mb)
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	24 Aug 5:53 pm CDT

More Information:

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

Extended Forecast for

Cahokia IL

Tonight
Low: 66 °F
Decreasing
Clouds
Tuesday
High: 89 °F
Mostly Sunny
Tuesday Night
Low: 70 °F
Increasing
Clouds
Wednesday
High: 92 °F
Partly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 70 °F
Slight Chance
T-storms
Thursday
High: 90 °F
Sunny
Thursday Night
Low: 67 °F
Mostly Clear
Friday
High: 89 °F
Sunny
Friday Night
Low: 67 °F
Mostly Clear

Detailed Forecast

Tonight

Cloudy, then gradually becoming partly cloudy, with a low around 66. East wind around 6 mph becoming calm in the evening.

Tuesday

Mostly sunny, with a high near 89. Southeast wind 3 to 6 mph.

Tuesday Night

Increasing clouds, with a low around 70. Southeast wind around 5 mph becoming calm in the evening.

Wednesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 70. West wind around 5 mph becoming calm in the evening.

Thursday

Sunny, with a high near 90.

Thursday Night

Mostly clear, with a low around 67.

Friday

Sunny, with a high near 89.

Friday Night

Mostly clear, with a low around 67.

Saturday

Sunny, with a high near 92.