Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

89°F

32°C

Humidity	48%
Wind Speed	Vrbl 3 mph
Barometer	29.98 in (1014.5 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	92°F (33°C)
Last update	4 Aug 3:54 pm CDT

More Information:

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

Extended Forecast for

Cottleville MO

Tonight
Low: 70 °F
Mostly Cloudy
Wednesday
High: 90 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 71 °F
T-storms
Likely
Thursday
High: 84 °F
T-storms then
Chance
T-storms
Thursday Night
Low: 70 °F
Chance
T-storms
Friday
High: 86 °F
Chance
Showers then
Chance
T-storms
Friday Night
Low: 70 °F
Chance
T-storms
Saturday
High: 89 °F
Sunny
Saturday Night
Low: 73 °F
Mostly Clear

Detailed Forecast

Tonight

Clear during the early evening, then becoming mostly cloudy, with a low around 70. Southeast wind 3 to 5 mph.

Wednesday

A 20 percent chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 90. South wind 3 to 8 mph.

Wednesday Night

Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 71. Northeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 60%.

Thursday

Showers and thunderstorms, mainly before 10am. High near 84. Light and variable wind. Chance of precipitation is 80%.

Thursday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind.

Friday

A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 86. Chance of precipitation is 30%.

Friday Night

A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 70.

Saturday

Sunny, with a high near 89.

Saturday Night

Mostly clear, with a low around 73.

Sunday

Mostly sunny, with a high near 91.

Sunday Night

Mostly clear, with a low around 75.

Monday

Sunny, with a high near 94.