The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Diamond Bar, CA vs Chino Hills, CA

2025 Compare Climate & Weather:
Diamond Bar, CA vs Chino Hills, CA

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Highlights

On average, there are 288 sunny days per year in Chino Hills. Diamond Bar averages 286 sunny days per year. The US average is 205 sunny days.

Chino Hills, California gets 15.4 inches of rain, on average, per year. Diamond Bar, California gets 18.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chino Hills averages 0 inches of snow per year. Diamond Bar averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Chino Hills, California
Summer High: the July high is around 91.5 degrees
Winter Low: the January low is 42
Rain: averages 15.4 inches of rain a year
Snow: averages 0 inches of snow a year

Diamond Bar, California
Summer High: the July high is around 90.9 degrees
Winter Low: the January low is 42.5
Rain: averages 18.8 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index
Chino Hills

The annual BestPlaces Comfort Index for Chino Hills is 8.8 (10=best), which means it is more comfortable than most places in California.

8.8 / 10
May, October and June are the most pleasant months in Chino Hills, while August and January are the least comfortable months.

Diamond Bar

The annual BestPlaces Comfort Index for Diamond Bar is 8.8 (10=best), which means it is more comfortable than most places in California.

8.8 / 10
May, June and October are the most pleasant months in Diamond Bar, while August and January are the least comfortable months.

Average Monthly High / Low (°F)
MonthDiamond Bar, CAChino Hills, CA
January67° / 43°67° / 42°
February68° / 44°67° / 44°
March71° / 46°70° / 46°
April75° / 49°75° / 48°
May79° / 54°79° / 54°
June84° / 58°85° / 57°
July91° / 62°92° / 62°
August93° / 62°93° / 62°
September89° / 60°89° / 60°
October81° / 54°81° / 54°
November73° / 46°73° / 45°
December67° / 41°67° / 41°
Hot, Freezing, Rainy, Snowy Days: Diamond Bar / Chino Hills
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 01 / 16 / 60 / 0
February0 / 01 / 16 / 60 / 0
March0 / 00 / 05 / 50 / 0
April2 / 20 / 03 / 30 / 0
May3 / 30 / 01 / 10 / 0
June7 / 80 / 01 / 10 / 0
July18 / 190 / 00 / 00 / 0
August21 / 220 / 00 / 00 / 0
September15 / 150 / 01 / 10 / 0
October6 / 60 / 02 / 20 / 0
November1 / 11 / 13 / 30 / 0
December0 / 02 / 24 / 40 / 0
August is the hottest month for Diamond Bar with an average high temperature of 92.6°, which ranks it as about average compared to other places in California. In Diamond Bar, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Diamond Bar are May, October and April.

August is the hottest month for Chino Hills with an average high temperature of 93.1°, which ranks it as warmer than most places in California. In Chino Hills, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chino Hills are May, October and April.
December has the coldest nighttime temperatures for Diamond Bar with an average of 41.3°. This is warmer than most places in California.

December has the coldest nighttime temperatures for Chino Hills with an average of 40.8°. This is warmer than most places in California.

In Diamond Bar, there are 72.5 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Chino Hills, there are 76.6 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Diamond Bar, there are 4.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Chino Hills, there are 4.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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

February is the wettest month in Diamond Bar with 4.7 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 18.8 inches in Diamond Bar means that it is about average compared to other places in California.


February is the wettest month in Chino Hills with 3.6 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 59% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 15.4 inches in Chino Hills means that it is drier than most places in California.

February is the rainiest month in Diamond Bar with 5.9 days of rain, and July is the driest month with only 0.2 rainy days. There are 32.3 rainy days annually in Diamond Bar, which is less rainy than most places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 4% chance of a rainy day.

February is the rainiest month in Chino Hills with 6.1 days of rain, and July is the driest month with only 0.2 rainy days. There are 32.7 rainy days annually in Chino Hills, 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.

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

There is rarely any recorded snowfall in Chino Hills, ranking it as one of the least snowy places in California.
Any measurable snowfall is a rare occurance in Diamond Bar.

Any measurable snowfall is a rare occurance in Chino Hills.

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 Diamond Bar    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 Diamond Bar

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Reviews for Chino Hills    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 Chino Hills

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