OFallon Missouri Weather

OFallon - Weather Data from OFallon, MO

Latitude: N 38° 50' 20" Longitude: W 90° 43' 42" Altitude: 532 ft

CST UTC Last station update CST

WXSIM Forecast for: O'Fallon
Issued by: OFallonweather.com

Updated: Friday, 07-Nov-2025 04:00 pm

Tonight Partly Cloudy	Saturday Mostly Cloudy	Saturday night Mostly Cloudy	Sunday Partly Cloudy	Sunday night Mostly Clear	Monday Sunny	Monday night Clear	Tuesday Partly Cloudy
	<.1 in.	<.1 in.
Low: 37°	High: 58°	Low: 38°	High: 42°	Low: 26°	High: 42°	Low: 27°	High: 55°
				WCh: 17°	WCh: 16°
WNW 5-19 mph	NNW→S calm	NW 8-27→14-29 mph	NW 14-31 mph	NW 11-26 mph	NW 11-28 mph	WNW→WSW 6-20 mph	SW 8-23→12-28 mph

Tonight	Clear in the evening, becoming fair to partly cloudy after midnight. Low 37°. Wind west-northwest around 5 mph, gusting to 19 mph.
Saturday	Mostly cloudy. A slight chance of rain. High 58°. Wind north-northwest near calm in the morning, becoming south in the afternoon. Chance of precipitation 20 percent. Precipitation mostly less than a tenth of an inch.
Saturday night	Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A chance of rain. Breezy. Low 38°. Wind northwest around 8 mph, gusting to 27 mph, in the evening, becoming 14 mph, gusting to 29 mph, after midnight. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch.
Sunday	Partly cloudy. Breezy and cold. High 42°. Wind chill around 32. Wind northwest around 14 mph, gusting to 31 mph.
Sunday night	Mostly clear in the evening, becoming clear after midnight. Cold. Low 26°. Wind chill ranging from 17 to 31. Wind northwest around 11 mph, gusting to 26 mph.
Monday	Sunny. High 42°. Wind chill ranging from 16 to 35. Wind northwest around 11 mph, gusting to 28 mph.
Monday night	Clear in the evening, becoming fair after midnight. Cold. Low 27°. Wind west-northwest around 6 mph, gusting to 20 mph, in the evening, becoming west-southwest after midnight.
Tuesday	Partly cloudy. High 55°. Wind southwest around 8 mph, gusting to 23 mph, in the morning, becoming 12 mph, gusting to 28 mph, in the afternoon.
Tuesday night	Clear. Low 32°. Wind southwest around 10 mph, gusting to 21 mph.
Wednesday	Sunny in the morning, becoming mostly sunny in the afternoon. Mild. High 66°. Wind west-southwest around 9 mph, gusting to 26 mph.
Wednesday night	Mostly clear. Low 35°. Wind west around 5 mph.
Thursday	Partly cloudy. Mild. High 65°. Wind west around 4 mph, gusting to 24 mph.
Thursday night	Clear in the evening, becoming fair after midnight. Low 35°. Wind east around 2 mph.

WXSIM forecast formatting script by Saratoga-Weather.org.

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