Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Light Rain

69°F

21°C

Humidity	90%
Wind Speed	N 14 mph
Barometer	29.77 in (1007.5 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	1 Aug 10:54 pm CDT

More Information:

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

Extended Forecast for

Chesterfield MO

Tonight
Low: 67 °F
Slight Chance
Drizzle
Sunday
High: 82 °F
Partly Sunny
Sunday Night
Low: 66 °F
Mostly Clear
Monday
High: 85 °F
Decreasing
Clouds
Monday Night
Low: 66 °F
Mostly Clear
Tuesday
High: 87 °F
Sunny
Tuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 89 °F
Sunny
Wednesday Night
Low: 70 °F
Partly Cloudy
then Chance
T-storms

Detailed Forecast

Tonight

A slight chance of drizzle before 4am, then a slight chance of drizzle after 5am. Mostly cloudy, with a low around 67. North wind around 14 mph, with gusts as high as 23 mph.

Sunday

Partly sunny, with a high near 82. North wind around 14 mph, with gusts as high as 23 mph.

Sunday Night

Mostly clear, with a low around 66. North wind 5 to 9 mph becoming calm in the evening.

Monday

Mostly cloudy, then gradually becoming sunny, with a high near 85. Calm wind becoming north around 5 mph in the afternoon.

Monday Night

Mostly clear, with a low around 66. Light east wind.

Tuesday

Sunny, with a high near 87.

Tuesday Night

Mostly clear, with a low around 68.