2025 Compare Climate & Weather:
Prescott, AZ vs Simi Valley, CA

Highlights

On average, there are 277 sunny days per year in Simi Valley. Prescott averages 277 sunny days per year. The US average is 205 sunny days.

Simi Valley, California gets 17.2 inches of rain, on average, per year. Prescott, Arizona gets 15.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Simi Valley averages 0 inches of snow per year. Prescott averages 12.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Simi Valley, California
Summer High: the July high is around 92.2 degrees
Winter Low: the January low is 41.5
Rain: averages 17.2 inches of rain a year
Snow: averages 0 inches of snow a year

Prescott, Arizona
Summer High: the July high is around 89.3 degrees
Winter Low: the January low is 25
Rain: averages 15.9 inches of rain a year
Snow: averages 12.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Simi Valley is 8.6 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for Prescott is 7.9 (10=best), which means it is one of the most pleasant places in Arizona.

Today's Weather - Prescott, AZ

61°F

Today's Weather - Simi Valley, CA

67°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Prescott / Simi Valley

July is the hottest month for Prescott with an average high temperature of 89.3°, which ranks it as cooler than most places in Arizona. In Prescott, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Prescott are May, September and October.

August is the hottest month for Simi Valley with an average high temperature of 93.5°, which ranks it as warmer than most places in California. In Simi Valley, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Simi Valley are April, May and November.

December has the coldest nighttime temperatures for Prescott with an average of 24.5°. This is colder than most places in Arizona.

December has the coldest nighttime temperatures for Simi Valley with an average of 40.5°. This is warmer than most places in California.

In Prescott, there are 35.9 days annually when the high temperature is over 90°, which is cooler than most places in Arizona.

In Simi Valley, there are 82.8 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Prescott, there are 120.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Arizona.

In Simi Valley, there are 9.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Prescott, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Arizona.

In Simi Valley, 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 Prescott with 2.7 inches of rain, and the driest month is June with 0.3 inches. The wettest season is Autumn with 34% of yearly precipitation and 16% occurs in Summer, which is the driest season. The annual rainfall of 15.9 inches in Prescott means that it is wetter than most places in Arizona.


February is the wettest month in Simi Valley with 4.3 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 62% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 17.2 inches in Simi Valley means that it is about average compared to other places in California.

August is the rainiest month in Prescott with 9.9 days of rain, and June is the driest month with only 2.0 rainy days. There are 63.2 rainy days annually in Prescott, which is rainier than most places in Arizona. The rainiest season is Autumn when it rains 33% of the time and the driest is Summer with only a 20% chance of a rainy day.

February is the rainiest month in Simi Valley with 6.6 days of rain, and July is the driest month with only 0.2 rainy days. There are 35.0 rainy days annually in Simi Valley, which is less rainy than most places in California. The rainiest season is Spring when it rains 51% of the time and the driest is Autumn with only a 3% chance of a rainy day.

An annual snowfall of 12.5 inches in Prescott means that it is snowier than most places in Arizona.

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

February is the snowiest month in Prescott with 3.9 inches of snow, and 6 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Simi Valley.