The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Tempe, AZ vs Simi Valley, CA

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

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Highlights

On average, there are 277 sunny days per year in Simi Valley. Tempe averages 300 sunny days per year. The US average is 205 sunny days.

Simi Valley, California gets 17.2 inches of rain, on average, per year. Tempe, Arizona gets 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. Tempe averages 0 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

Tempe, Arizona
Summer High: the July high is around 104.1 degrees
Winter Low: the January low is 41.5
Rain: averages 9 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index
Simi Valley

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

8.6 / 10
May, October and June are the most pleasant months in Simi Valley, while August and July are the least comfortable months.

Tempe

The annual BestPlaces Comfort Index for Tempe is 7.4 (10=best), which means it is less comfortable than most places in Arizona.

7.4 / 10
April, March and November are the most pleasant months in Tempe, while July and August are the least comfortable months.

Average Monthly High / Low (°F)
MonthTempe, AZSimi Valley, CA
January68° / 42°68° / 42°
February71° / 44°68° / 42°
March77° / 49°72° / 44°
April85° / 55°76° / 46°
May94° / 63°80° / 51°
June102° / 71°86° / 55°
July104° / 78°92° / 59°
August103° / 78°94° / 58°
September98° / 71°90° / 57°
October88° / 59°82° / 51°
November76° / 48°74° / 45°
December66° / 41°68° / 41°
Hot, Freezing, Rainy, Snowy Days: Tempe / Simi Valley
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 03 / 34 / 60 / 0
February0 / 01 / 24 / 70 / 0
March1 / 10 / 14 / 50 / 0
April9 / 30 / 02 / 30 / 0
May23 / 60 / 01 / 10 / 0
June29 / 100 / 01 / 00 / 0
July31 / 190 / 04 / 00 / 0
August31 / 210 / 05 / 00 / 0
September28 / 160 / 03 / 10 / 0
October13 / 70 / 03 / 30 / 0
November1 / 10 / 13 / 30 / 0
December0 / 03 / 34 / 50 / 0
July is the hottest month for Tempe with an average high temperature of 104.1°, which ranks it as warmer than most places in Arizona. In Tempe, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Tempe are March, November and February.

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 Tempe with an average of 40.5°. This is warmer 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 Tempe, there are 164.9 days annually when the high temperature is over 90°, which is hotter 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 Tempe, there are 7.2 days annually when the nighttime low temperature falls below freezing, which is warmer 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 Tempe, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other 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 Tempe with 1.2 inches of rain, and the driest month is June with 0.0 inches. The wettest season is Spring with 35% of yearly precipitation and 17% occurs in Summer, which is the driest season. The annual rainfall of 9.0 inches in Tempe means that it is drier 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 Tempe with 4.7 days of rain, and June is the driest month with only 0.5 rainy days. There are 36.2 rainy days annually in Tempe, 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.

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.

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

There is rarely any recorded snowfall in Simi Valley, ranking it as one of the least snowy places in California.
Any measurable snowfall is a rare occurance in Tempe.

Any measurable snowfall is a rare occurance in Simi Valley.

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 Tempe    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 Tempe

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Reviews for Simi 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 Simi Valley

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Zips In Tempe, Arizona
85281, 85282, 85283, 85284
Zips In SIMI VALLEY, CALIFORNIA
93065, 93063
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