The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: West Chester, PA vs Oro Valley, AZ

2025 Compare Climate & Weather:
West Chester, PA vs Oro Valley, AZ

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Highlights

On average, there are 279 sunny days per year in Oro Valley. West Chester averages 206 sunny days per year. The US average is 205 sunny days.

Oro Valley, Arizona gets 13.5 inches of rain, on average, per year. West Chester, Pennsylvania gets 48.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Oro Valley averages 0.3 inches of snow per year. West Chester averages 22.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Oro Valley, Arizona
Summer High: the July high is around 100.2 degrees
Winter Low: the January low is 36.9
Rain: averages 13.5 inches of rain a year
Snow: averages 0.3 inches of snow a year

West Chester, Pennsylvania
Summer High: the July high is around 84.9 degrees
Winter Low: the January low is 21.4
Rain: averages 48.7 inches of rain a year
Snow: averages 22.1 inches of snow a year

BestPlaces Comfort Index
Oro Valley

The annual BestPlaces Comfort Index for Oro Valley is 7.6 (10=best), which means it is about average compared to other places in Arizona.

7.6 / 10
April, October and March are the most pleasant months in Oro Valley, while July and August are the least comfortable months.

West Chester

The annual BestPlaces Comfort Index for West Chester is 7.2 (10=best), which means it is one of the most pleasant places in Pennsylvania.

7.2 / 10
June, September and August are the most pleasant months in West Chester, while January and February are the least comfortable months.

Average Monthly High / Low (°F)
MonthWest Chester, PAOro Valley, AZ
January39° / 21°66° / 37°
February42° / 23°69° / 38°
March51° / 31°74° / 42°
April62° / 40°82° / 48°
May72° / 50°92° / 56°
June81° / 60°101° / 65°
July85° / 64°100° / 72°
August83° / 63°98° / 71°
September76° / 55°95° / 65°
October65° / 43°86° / 53°
November54° / 34°75° / 42°
December43° / 26°65° / 36°
Hot, Freezing, Rainy, Snowy Days: West Chester / Oro Valley
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 027 / 810 / 54 / 0
February0 / 024 / 69 / 43 / 0
March0 / 117 / 211 / 41 / 0
April0 / 55 / 111 / 20 / 0
May1 / 200 / 011 / 20 / 0
June2 / 290 / 010 / 10 / 0
July5 / 300 / 010 / 80 / 0
August3 / 290 / 09 / 100 / 0
September1 / 250 / 09 / 50 / 0
October0 / 93 / 09 / 30 / 0
November0 / 013 / 410 / 30 / 0
December0 / 024 / 1010 / 52 / 0
July is the hottest month for West Chester with an average high temperature of 84.9°, which ranks it as warmer than most places in Pennsylvania. In West Chester, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for West Chester are September, June and August.

June is the hottest month for Oro Valley with an average high temperature of 100.5°, which ranks it as warmer than most places in Arizona. In Oro Valley, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Oro Valley are November, March and April.
January has the coldest nighttime temperatures for West Chester with an average of 21.4°. This is warmer than most places in Pennsylvania.

December has the coldest nighttime temperatures for Oro Valley with an average of 35.8°. This is warmer than most places in Arizona.

In West Chester, there are 12.2 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

In Oro Valley, there are 147.2 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

In West Chester, there are 112.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In Oro Valley, there are 30.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

In West Chester, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

In Oro Valley, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Arizona.

September is the wettest month in West Chester with 4.9 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Winter with 26% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 48.7 inches in West Chester means that it is one of the wettest places in Pennsylvania.


August is the wettest month in Oro Valley with 2.6 inches of rain, and the driest month is May with 0.3 inches. The wettest season is Autumn with 38% of yearly precipitation and 13% occurs in Summer, which is the driest season. The annual rainfall of 13.5 inches in Oro Valley means that it is wetter than most places in Arizona.

April is the rainiest month in West Chester with 11.3 days of rain, and September is the driest month with only 8.7 rainy days. There are 119.7 rainy days annually in West Chester, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

August is the rainiest month in Oro Valley with 9.5 days of rain, and June is the driest month with only 1.2 rainy days. There are 51.0 rainy days annually in Oro Valley, which is about average compared to other places in Arizona. The rainiest season is Autumn when it rains 37% of the time and the driest is Summer with only a 15% chance of a rainy day.

An annual snowfall of 22.1 inches in West Chester means that it is less snowy than most places in Pennsylvania.

An annual snowfall of 0.3 inches in Oro Valley means that it is about average compared to other places in Arizona.
February is the snowiest month in West Chester with 8.4 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Oro Valley with 0.1 inches of snow, and no 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 West Chester    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

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

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

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

   |    Reply

Start Your Review of West Chester

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Reviews for Oro Valley    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

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

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

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

   |    Reply

Start Your Review of Oro Valley

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Zips In West Chester, Pennsylvania
19383
Zips In ORO VALLEY, ARIZONA
85737, 85755
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