2025 Compare Climate & Weather:
Merced, CA vs Mesa, AZ

Highlights

On average, there are 301 sunny days per year in Mesa. Merced averages 262 sunny days per year. The US average is 205 sunny days.

Mesa, Arizona gets 10.1 inches of rain, on average, per year. Merced, California gets 12.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Mesa averages 0 inches of snow per year. Merced averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Mesa, Arizona
Summer High: the July high is around 104.6 degrees
Winter Low: the January low is 40.9
Rain: averages 10.1 inches of rain a year
Snow: averages 0 inches of snow a year

Merced, California
Summer High: the July high is around 95.1 degrees
Winter Low: the January low is 37.1
Rain: averages 12.5 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Merced is 8.1 (10=best), which means it is about average compared to other places in California.

Today's Weather - Merced, CA

69°F

Today's Weather - Mesa, AZ

79°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Merced / Mesa

July is the hottest month for Merced with an average high temperature of 95.1°, which ranks it as warmer than most places in California. In Merced, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Merced are October, April and May.

July is the hottest month for Mesa with an average high temperature of 104.6°, which ranks it as warmer than most places in Arizona. In Mesa, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mesa are March, November and April.

December has the coldest nighttime temperatures for Merced with an average of 36.1°. This is colder than most places in California.

December has the coldest nighttime temperatures for Mesa with an average of 39.6°. This is warmer than most places in Arizona.

In Merced, there are 88.0 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Mesa, there are 165.6 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

In Merced, there are 23.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In Mesa, there are 8.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

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

January is the wettest month in Merced with 2.5 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 54% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 12.5 inches in Merced means that it is drier than most places in California.


August is the wettest month in Mesa with 1.4 inches of rain, and the driest month is June with 0.0 inches. The wettest season is Spring with 35% of yearly precipitation and 18% occurs in Summer, which is the driest season. The annual rainfall of 10.1 inches in Mesa means that it is drier than most places in Arizona.

January is the rainiest month in Merced with 9.9 days of rain, and July is the driest month with only 0.1 rainy days. There are 54.8 rainy days annually in Merced, which is about average compared to other places in California. The rainiest season is Spring when it rains 52% of the time and the driest is Autumn with only a 2% chance of a rainy day.

August is the rainiest month in Mesa with 4.8 days of rain, and June is the driest month with only 0.5 rainy days. There are 36.0 rainy days annually in Mesa, which is less rainy than most places in Arizona. The rainiest season is Spring when it rains 35% of the time and the driest is Summer with only a 18% chance of a rainy day.

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

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

Any measurable snowfall is a rare occurance in Merced.

Any measurable snowfall is a rare occurance in Mesa.