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Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

22°F

-6°C

Humidity	68%
Wind Speed	S 5 mph
Barometer	30.39 in (1029.9 mb)
Dewpoint	13°F (-11°C)
Visibility	10.00 mi
Wind Chill	15°F (-9°C)
Last update	23 Feb 8:53 pm CST

More Information:

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

Extended Forecast for

O'Fallon IL

Tonight
Low: 20 °F
Mostly Clear
Tuesday
High: 52 °F
Partly Sunny
and Breezy
Tuesday Night
Low: 35 °F
Mostly Cloudy
Wednesday
High: 53 °F
Mostly Sunny
Wednesday Night
Low: 37 °F
Slight Chance
Rain then
Chance Rain
Thursday
High: 49 °F
Chance Rain
then Mostly
Sunny
Thursday Night
Low: 32 °F
Mostly Clear
Friday
High: 63 °F
Sunny
Friday Night
Low: 40 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly clear, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.

Tuesday

Partly sunny, with a high near 52. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 38 mph.

Tuesday Night

Mostly cloudy, with a low around 35. South wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

Wednesday

Mostly sunny, with a high near 53. Light and variable wind becoming north around 6 mph in the morning.

Wednesday Night

A 50 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 37. East wind 6 to 8 mph.

Thursday

A 30 percent chance of rain before noon. Partly sunny, with a high near 49.

Thursday Night

Mostly clear, with a low around 32.

Friday

Sunny, with a high near 63.