O'Fallon, Illinois 

3 Reviews | Review This Place | Photos and Maps

Best City Gifts

Weather in O'Fallon, Illinois

The most pleasant months of the year for O'Fallon are May, September and October. In O'Fallon, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for O'Fallon with an average high temperature of 89.2°, which ranks it as one of the hottest places in Illinois. January is the snowiest month in O'Fallon with 3.8 inches of snow, and 4 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.


Today's Weather - O'Fallon, IL

12 AM PST

Mostly Sunny

83°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
This AfternoonMostly Sunny84° / 66°S 6 mph
FridaySlight Chance Showers And Thunderstorms86° / 67°S 3 to 9 mph
SaturdaySunny90° / 71°S 3 to 8 mph
SundaySlight Chance Showers And Thunderstorms91° / 74°S 6 to 14 mph
MondayChance Showers And Thunderstorms then Mostly Sunny94° / 75°S 10 mph
TuesdaySlight Chance Rain Showers then Slight Chance Showers And Thunderstorms94° / 74°SW 8 mph
WednesdayChance Rain Showers93° / 72°SW 8 mph

Average Monthly High and Low (°F)
HighLow
January41° 22°
February46° 26°
March57° 34°
April68° 45°
May77° 55°
June86° 63°
July89° 67°
August88° 65°
September81° 56°
October70° 45°
November57° 35°
December43° 25°
Hot, Freezing, Rainy, Snowy Days: O'Fallon
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January02673
February02172
March01491
April03100
May10110
June9090
July14070
August12070
September4070
October0380
November01280
December02382

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.


View More Data >

Reviews for O Fallon    3 Reviews
Great Place for kids - 10/19/2008
We are a family who moves every 3 years! This has been our favorite so far. It is easy to become a part of the community. There is always something going on for kids... Read More

Start Your Review of O Fallon


Quality of eduction - 5/5/2006
The quality of education is excellent. My oldest son has ADHD and the elementary school he attends makes every provision necessary to make his education... Read More

quality of eduation - 5/5/2006
The quality of education is excellent. My oldest son has ADHD and the elementary school he attends makes whatever provisions are necessary to insure the highest quality... Read More


View More Data >

COMPARE COST OF LIVING
Compare O'Fallon, Illinois to any other place in the USA.


MAPS OF O'FALLON, ILLINOIS
Check out the latest Maps in a variety of categories including cost of living, population, and commute time.O_Fallon,Illinois Map
ZIP CODES IN O'FALLON, ILLINOIS
62269


PREMIUM MEMBERSHIP

Members receive 10 FREE city profile downloads a month, unlimited access to our detailed cost of living calculator and analysis, unlimited access to our DataEngine, and more.

Try Now
Join BestPlaces