2025 Compare Climate & Weather:
Flagstaff, AZ vs Tustin, CA

Highlights

On average, there are 278 sunny days per year in Tustin. Flagstaff averages 266 sunny days per year. The US average is 205 sunny days.

Tustin, California gets 13.1 inches of rain, on average, per year. Flagstaff, Arizona gets 20.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Tustin averages 0 inches of snow per year. Flagstaff averages 81 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Tustin, California
Summer High: the July high is around 82.3 degrees
Winter Low: the January low is 46.5
Rain: averages 13.1 inches of rain a year
Snow: averages 0 inches of snow a year

Flagstaff, Arizona
Summer High: the July high is around 81.7 degrees
Winter Low: the January low is 14.3
Rain: averages 20.7 inches of rain a year
Snow: averages 81 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Tustin is 9.4 (10=best), which means it is one of the most pleasant places in California.

The annual BestPlaces Comfort Index for Flagstaff is 6.9 (10=best), which means it is one of the least comfortable places in Arizona.

Today's Weather - Flagstaff, AZ

37°F

Today's Weather - Tustin, CA

56°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Flagstaff / Tustin

July is the hottest month for Flagstaff with an average high temperature of 81.7°, which ranks it as one of the coolest places in Arizona. In Flagstaff, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Flagstaff are June, August and July.

August is the hottest month for Tustin with an average high temperature of 84.1°, which ranks it as cooler than most places in California. In Tustin, there are 9 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Tustin are June, October and May.

January has the coldest nighttime temperatures for Flagstaff with an average of 14.3°. This is one of the coldest places in Arizona.

December has the coldest nighttime temperatures for Tustin with an average of 45.7°. This is one of the warmest places in California.

In Flagstaff, there are 3.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

In Tustin, there are 19.1 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Flagstaff, there are 210.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Arizona.

In Tustin, there are 0.4 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Flagstaff, there are 7.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Arizona.

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

August is the wettest month in Flagstaff with 3.3 inches of rain, and the driest month is June with 0.3 inches. The wettest season is Autumn with 29% of yearly precipitation and 17% occurs in Summer, which is the driest season. The annual rainfall of 20.7 inches in Flagstaff means that it is wetter than most places in Arizona.


February is the wettest month in Tustin with 3.2 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 13.1 inches in Tustin means that it is drier than most places in California.

August is the rainiest month in Flagstaff with 13.8 days of rain, and June is the driest month with only 2.8 rainy days. There are 83.4 rainy days annually in Flagstaff, which is one of the rainiest places in Arizona. The rainiest season is Autumn when it rains 34% of the time and the driest is Summer with only a 20% chance of a rainy day.

February is the rainiest month in Tustin with 6.4 days of rain, and July is the driest month with only 0.4 rainy days. There are 36.0 rainy days annually in Tustin, 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.

An annual snowfall of 81.0 inches in Flagstaff means that it is one of the snowiest places in Arizona.

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

January is the snowiest month in Flagstaff with 19.1 inches of snow, and 8 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Tustin.