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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

70°F

21°C

Humidity	87%
Wind Speed	N 18 G 25 mph
Barometer	29.74 in (1006.9 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	2 Aug 1:53 am CDT

More Information:

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

Extended Forecast for

2 Miles WSW O'Fallon IL

Overnight
Low: 68 °F
Drizzle
Sunday
High: 82 °F
Chance
Drizzle then
Mostly Sunny
Sunday Night
Low: 65 °F
Mostly Clear
Monday
High: 85 °F
Sunny
Monday Night
Low: 64 °F
Clear
Tuesday
High: 87 °F
Sunny
Tuesday Night
Low: 66 °F
Mostly Clear
Wednesday
High: 90 °F
Sunny
Wednesday Night
Low: 71 °F
Partly Cloudy
then Chance
T-storms

Detailed Forecast

Overnight

Drizzle, mainly before 4am. Cloudy, with a low around 68. North wind around 16 mph.

Sunday

A chance of drizzle, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 82. North wind 14 to 16 mph, with gusts as high as 23 mph.

Sunday Night

Mostly clear, with a low around 65. North wind 5 to 10 mph becoming light after midnight.

Monday

Sunny, with a high near 85. North wind 3 to 6 mph.

Monday Night

Clear, with a low around 64. Northeast wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 87.

Tuesday Night

Mostly clear, with a low around 66.

Wednesday

Sunny, with a high near 90.