2025 Compare Climate & Weather:
Costa Mesa, CA vs Williams, AZ

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Highlights

On average, there are 266 sunny days per year in Williams. Costa Mesa averages 274 sunny days per year. The US average is 205 sunny days.

Williams, Arizona gets 22.2 inches of rain, on average, per year. Costa Mesa, California gets 12 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Williams averages 74.3 inches of snow per year. Costa Mesa averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Williams, Arizona
Summer High: the July high is around 84.6 degrees
Winter Low: the January low is 21.9
Rain: averages 22.2 inches of rain a year
Snow: averages 74.3 inches of snow a year

Costa Mesa, California
Summer High: the July high is around 77.7 degrees
Winter Low: the January low is 47.8
Rain: averages 12 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

Williams

The annual BestPlaces Comfort Index for Williams is 7.3 (10=best), which means it is less comfortable than most places in Arizona.

7.3 / 10

June, September and August are the most pleasant months in Williams, while January and December are the least comfortable months.

Costa Mesa

The annual BestPlaces Comfort Index for Costa Mesa is 9.3 (10=best), which means it is one of the most pleasant places in California.

9.3 / 10

June, October and September are the most pleasant months in Costa Mesa, while January and February are the least comfortable months.

Average Monthly High / Low (°F)

Month	Costa Mesa, CA	Williams, AZ
January	67° / 48°	44° / 22°
February	67° / 49°	48° / 24°
March	67° / 51°	54° / 27°
April	69° / 54°	62° / 33°
May	71° / 58°	72° / 40°
June	74° / 61°	82° / 48°
July	78° / 65°	85° / 55°
August	79° / 65°	82° / 54°
September	79° / 63°	76° / 47°
October	75° / 59°	65° / 37°
November	71° / 52°	54° / 28°
December	66° / 47°	45° / 21°

Hot, Freezing, Rainy, Snowy Days: Costa Mesa / Williams

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	0 / 29	6 / 7	0 / 5
February	0 / 0	0 / 25	7 / 7	0 / 5
March	0 / 0	0 / 25	6 / 7	0 / 4
April	1 / 0	0 / 14	3 / 4	0 / 2
May	0 / 0	0 / 5	1 / 3	0 / 0
June	1 / 3	0 / 1	1 / 3	0 / 0
July	2 / 5	0 / 0	0 / 10	0 / 0
August	2 / 1	0 / 0	0 / 12	0 / 0
September	3 / 0	0 / 1	1 / 7	0 / 0
October	2 / 0	0 / 8	2 / 5	0 / 0
November	0 / 0	0 / 21	4 / 5	0 / 2
December	0 / 0	0 / 28	5 / 6	0 / 4

August is the hottest month for Costa Mesa with an average high temperature of 79.4°, which ranks it as cooler than most places in California. In Costa Mesa, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Costa Mesa are July, September and August.

July is the hottest month for Williams with an average high temperature of 84.6°, which ranks it as one of the coolest places in Arizona. In Williams, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Williams are September, August and June.

December has the coldest nighttime temperatures for Costa Mesa with an average of 47.1°. This is one of the warmest places in California.

December has the coldest nighttime temperatures for Williams with an average of 21.2°. This is colder than most places in Arizona.

In Costa Mesa, there are 10.4 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Williams, there are 8.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

In Costa Mesa, there are 0.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Williams, there are 155.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Arizona.

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

In Williams, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Arizona.

February is the wettest month in Costa Mesa with 2.8 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 60% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 12.0 inches in Costa Mesa means that it is drier than most places in California.

August is the wettest month in Williams with 3.3 inches of rain, and the driest month is June with 0.4 inches. The wettest season is Spring with 31% of yearly precipitation and 18% occurs in Summer, which is the driest season. The annual rainfall of 22.2 inches in Williams means that it is one of the wettest places in Arizona.

February is the rainiest month in Costa Mesa with 6.6 days of rain, and July is the driest month with only 0.4 rainy days. There are 36.4 rainy days annually in Costa Mesa, which is less rainy than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 4% chance of a rainy day.

August is the rainiest month in Williams with 12.3 days of rain, and June is the driest month with only 2.5 rainy days. There are 75.3 rainy days annually in Williams, which is one of the rainiest places in Arizona. The rainiest season is Autumn when it rains 33% of the time and the driest is Summer with only a 19% chance of a rainy day.

There is rarely any recorded snowfall in Costa Mesa, ranking it as one of the least snowy places in California.

An annual snowfall of 74.3 inches in Williams means that it is one of the snowiest places in Arizona.

Any measurable snowfall is a rare occurance in Costa Mesa.

January is the snowiest month in Williams with 19.5 inches of snow, and 7 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 Costa Mesa 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

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Reviews for Williams 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 Williams

See all reviews

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2025 Compare Climate & Weather:
Costa Mesa, CA vs Williams, AZ

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Costa Mesa / Williams

December has the coldest nighttime temperatures for Costa Mesa with an average of 47.1°. This is one of the warmest places in California.

December has the coldest nighttime temperatures for Williams with an average of 21.2°. This is colder than most places in Arizona.

In Costa Mesa, there are 10.4 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Williams, there are 8.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

In Costa Mesa, there are 0.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Williams, there are 155.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Arizona.

There is rarely any recorded snowfall in Costa Mesa, ranking it as one of the least snowy places in California.

An annual snowfall of 74.3 inches in Williams means that it is one of the snowiest places in Arizona.

Any measurable snowfall is a rare occurance in Costa Mesa.

January is the snowiest month in Williams with 19.5 inches of snow, and 7 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Costa Mesa 2 Reviews

Reviews for Williams 2 Reviews

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2025 Compare Climate & Weather:Costa Mesa, CA vs Williams, AZ

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Costa Mesa / Williams

December has the coldest nighttime temperatures for Costa Mesa with an average of 47.1°. This is one of the warmest places in California.December has the coldest nighttime temperatures for Williams with an average of 21.2°. This is colder than most places in Arizona.

In Costa Mesa, there are 10.4 days annually when the high temperature is over 90°, which is cooler than most places in California.In Williams, there are 8.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

In Costa Mesa, there are 0.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.In Williams, there are 155.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Arizona.

There is rarely any recorded snowfall in Costa Mesa, ranking it as one of the least snowy places in California.An annual snowfall of 74.3 inches in Williams means that it is one of the snowiest places in Arizona.

Any measurable snowfall is a rare occurance in Costa Mesa.January is the snowiest month in Williams with 19.5 inches of snow, and 7 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Costa Mesa 2 Reviews

Reviews for Williams 2 Reviews

Most Recent Searches On Compare Climate & Weather

Compare Cost of Living

Zips In Costa Mesa, California

Zips In WILLIAMS, ARIZONA

Learn More About COSTA MESA, CALIFORNIA

Learn More About Williams, Arizona

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About BestPlaces

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2025 Compare Climate & Weather:
Costa Mesa, CA vs Williams, AZ

December has the coldest nighttime temperatures for Costa Mesa with an average of 47.1°. This is one of the warmest places in California.

December has the coldest nighttime temperatures for Williams with an average of 21.2°. This is colder than most places in Arizona.

In Costa Mesa, there are 10.4 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Williams, there are 8.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

In Costa Mesa, there are 0.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Williams, there are 155.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Arizona.

There is rarely any recorded snowfall in Costa Mesa, ranking it as one of the least snowy places in California.

An annual snowfall of 74.3 inches in Williams means that it is one of the snowiest places in Arizona.

Any measurable snowfall is a rare occurance in Costa Mesa.

January is the snowiest month in Williams with 19.5 inches of snow, and 7 months of the year have significant snowfall.