2025 Compare Climate & Weather:
Diamond Bar, CA vs Long Beach, CA

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Highlights

On average, there are 287 sunny days per year in Long Beach. Diamond Bar averages 286 sunny days per year. The US average is 205 sunny days.

Long Beach, California gets 13.6 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.

Long Beach 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

Long Beach, California
Summer High: the July high is around 79.4 degrees
Winter Low: the January low is 46.4
Rain: averages 13.6 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
Long Beach

The annual BestPlaces Comfort Index for Long Beach is 9.3 (10=best), which means it is one of the most pleasant places in California.

9.3 / 10
September, July and June are the most pleasant months in Long Beach, while January and December 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.

Today's Weather - Diamond Bar, CA

6 PM PST

Slight Chance Rain Showers

66°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonSlight Chance Rain Showers67° / 52°SW 10 mph
SundayChance Rain Showers63° / 52°S 10 mph
MondayMostly Cloudy64° / 52°SSW 5 to 10 mph
TuesdayMostly Sunny70° / 54°SW 0 to 10 mph
WednesdayMostly Sunny76° / 56°WNW 0 to 10 mph
ThursdaySunny83° / 60°WSW 0 to 10 mph
FridaySunny85° / 60°WSW 0 to 10 mph
Today's Weather - Long Beach, CA

6 PM PST

Partly Sunny

65°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonPartly Sunny65° / 57°WSW 15 mph
SundaySlight Chance Rain Showers then Partly Sunny65° / 57°S 10 to 15 mph
MondayPartly Sunny64° / 58°SSE 5 to 10 mph
TuesdayMostly Sunny66° / 57°S 0 to 10 mph
WednesdayPatchy Fog then Mostly Sunny70° / 58°W 0 to 15 mph
ThursdayPatchy Fog then Mostly Sunny68° / 60°W 0 to 10 mph
FridayPatchy Fog then Mostly Sunny68° / 60°SW 0 to 10 mph
Average Monthly High / Low (°F)
MonthDiamond Bar, CALong Beach, CA
January67° / 43°67° / 46°
February68° / 44°67° / 48°
March71° / 46°68° / 50°
April75° / 49°71° / 53°
May79° / 54°73° / 57°
June84° / 58°75° / 60°
July91° / 62°79° / 63°
August93° / 62°81° / 64°
September89° / 60°80° / 62°
October81° / 54°76° / 58°
November73° / 46°71° / 51°
December67° / 41°66° / 46°
Hot, Freezing, Rainy, Snowy Days: Diamond Bar / Long Beach
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 01 / 06 / 60 / 0
February0 / 01 / 06 / 60 / 0
March0 / 00 / 05 / 50 / 0
April2 / 10 / 03 / 30 / 0
May3 / 00 / 01 / 10 / 0
June7 / 10 / 01 / 10 / 0
July18 / 20 / 00 / 00 / 0
August21 / 30 / 00 / 00 / 0
September15 / 30 / 01 / 10 / 0
October6 / 20 / 02 / 20 / 0
November1 / 11 / 03 / 30 / 0
December0 / 02 / 04 / 50 / 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 Long Beach with an average high temperature of 81.0°, which ranks it as cooler than most places in California. In Long Beach, there are 8 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Long Beach are July, September and October.
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 Long Beach with an average of 46.2°. This is one of the warmest 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 Long Beach, there are 12.3 days annually when the high temperature is over 90°, which is cooler 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 Long Beach, there are 0.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest 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 Long Beach, 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 Long Beach with 3.5 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 63% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 13.6 inches in Long Beach 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 Long Beach with 6.0 days of rain, and August is the driest month with only 0.2 rainy days. There are 32.0 rainy days annually in Long Beach, which is less rainy than most places in California. The rainiest season is Spring when it rains 53% of the time and the driest is Autumn with only a 3% 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 Long Beach, 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 Long Beach.

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 Long Beach    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 Long Beach

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Zips In Diamond Bar, California
91765
Zips In LONG BEACH, CALIFORNIA
90805, 90813, 90806, 90815, 90802, 90804, 90810, 90808, 90807, 90803, 13 total
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