2024 Compare Climate & Weather:
O'Fallon, MO vs Arlington, VA
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Highlights
On average, there are 201 sunny days per year in Arlington. O'Fallon averages 200 sunny days per year. The US average is 205 sunny days.
Arlington, Virginia gets 43.3 inches of rain, on average, per year. O'Fallon, Missouri gets 42.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
Arlington averages 14.9 inches of snow per year. O'Fallon averages 13.4 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
Arlington, Virginia
Summer High: the July high is around 87.7 degrees
Winter Low: the January low is 26.5
Rain: averages 43.3 inches of rain a year
Snow: averages 14.9 inches of snow a year
O'Fallon, Missouri
Summer High: the July high is around 88 degrees
Winter Low: the January low is 20.7
Rain: averages 42.7 inches of rain a year
Snow: averages 13.4 inches of snow a year
BESTPLACES COMFORT INDEX
ArlingtonThe annual BestPlaces Comfort Index for Arlington is 7.3 (10=best), which means it is about average compared to other places in Virginia.
7.3 / 10
September, May and June are the most pleasant months in Arlington, while January and February are the least comfortable months.
O'FallonThe annual BestPlaces Comfort Index for O'Fallon is 7.2 (10=best), which means it is more comfortable than most places in Missouri.
7.2 / 10
September, May and June are the most pleasant months in O'Fallon, while January and December are the least comfortable months.
Today's Weather - Arlington, VA
8 AM PST
Sunny
83°F
DAY | DESCRIPTION | HIGH / LOW | WIND |
---|
Today | Sunny | 92° / 69° | S 8 to 13 mph |
Juneteenth | Mostly Sunny | 89° / 71° | S 5 to 10 mph |
Thursday | Sunny | 91° / 73° | S 3 to 8 mph |
Friday | Mostly Sunny | 96° / 74° | S 5 mph |
Saturday | Mostly Sunny then Slight Chance Showers And Thunderstorms | 97° / 76° | S 2 to 6 mph |
Sunday | Mostly Sunny then Slight Chance Showers And Thunderstorms | 97° / 77° | S 7 mph |
Monday | Chance Showers And Thunderstorms | 93° / 70° | SW 8 mph |
Average Monthly High / Low (°F)
Month | O'Fallon, MO | Arlington, VA |
---|
January | 39° / 21° | 43° / 27° |
February | 45° / 24° | 47° / 29° |
March | 55° / 33° | 56° / 36° |
April | 67° / 44° | 67° / 45° |
May | 76° / 54° | 75° / 55° |
June | 84° / 63° | 84° / 64° |
July | 88° / 67° | 88° / 69° |
August | 87° / 65° | 86° / 68° |
September | 80° / 56° | 79° / 60° |
October | 68° / 45° | 68° / 48° |
November | 56° / 35° | 57° / 39° |
December | 42° / 24° | 47° / 30° |
Hot, Freezing, Rainy, Snowy Days: O'Fallon / Arlington
Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
---|
January | 0 / 0 | 26 / 22 | 7 / 10 | 2 / 3 |
February | 0 / 0 | 21 / 18 | 8 / 9 | 2 / 2 |
March | 0 / 0 | 15 / 11 | 10 / 10 | 1 / 1 |
April | 0 / 0 | 3 / 2 | 11 / 11 | 0 / 0 |
May | 1 / 1 | 0 / 0 | 12 / 12 | 0 / 0 |
June | 6 / 6 | 0 / 0 | 10 / 11 | 0 / 0 |
July | 12 / 11 | 0 / 0 | 9 / 10 | 0 / 0 |
August | 11 / 8 | 0 / 0 | 8 / 9 | 0 / 0 |
September | 3 / 2 | 0 / 0 | 8 / 9 | 0 / 0 |
October | 0 / 0 | 2 / 1 | 9 / 8 | 0 / 0 |
November | 0 / 0 | 12 / 6 | 9 / 9 | 0 / 0 |
December | 0 / 0 | 24 / 18 | 8 / 10 | 2 / 1 |
July is the hottest month for O'Fallon with an average high temperature of 88.0°, which ranks it as about average compared to other places in Missouri. In O'Fallon, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for O'Fallon are September, May and June.
July is the hottest month for Arlington with an average high temperature of 87.7°, which ranks it as warmer than most places in Virginia. In Arlington, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Arlington are September, May and June.
January has the coldest nighttime temperatures for O'Fallon with an average of 20.7°. This is about average compared to other places in Missouri.
January has the coldest nighttime temperatures for Arlington with an average of 26.5°. This is warmer than most places in Virginia.
In O'Fallon, there are 32.2 days annually when the high temperature is over 90°, which is about average compared to other places in Missouri.
In Arlington, there are 29.0 days annually when the high temperature is over 90°, which is hotter than most places in Virginia.
In O'Fallon, there are 104.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Missouri.
In Arlington, there are 78.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Virginia.
In O'Fallon, there are 3.1 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Missouri.
In Arlington, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.
May is the wettest month in O'Fallon with 4.9 inches of rain, and the driest month is January with 2.4 inches. The wettest season is Summer with 29% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 42.7 inches in O'Fallon means that it is drier than most places in Missouri.
May is the wettest month in Arlington with 4.3 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 43.3 inches in Arlington means that it is about average compared to other places in Virginia.
May is the rainiest month in O'Fallon with 11.6 days of rain, and January is the driest month with only 7.2 rainy days. There are 106.5 rainy days annually in O'Fallon, which is one of the rainiest places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.
May is the rainiest month in Arlington with 11.7 days of rain, and October is the driest month with only 8.3 rainy days. There are 117.0 rainy days annually in Arlington, which is rainier than most places in Virginia. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.
An annual snowfall of 13.4 inches in O'Fallon means that it is about average compared to other places in Missouri.
An annual snowfall of 14.9 inches in Arlington means that it is about average compared to other places in Virginia.
February is the snowiest month in O'Fallon with 4.5 inches of snow, and 5 months of the year have significant snowfall.
January is the snowiest month in Arlington with 5.7 inches of snow, and 5 months of the year have significant snowfall.
DID YOU KNOW?
Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.
Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.
Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.
Reviews for O'fallon 2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of O'fallon
Reviews for Arlington 2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of Arlington
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