2024 Compare Climate & Weather:
Diamond Bar, CA vs Boulder City, NV
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Highlights
On average, there are 290 sunny days per year in Boulder City. Diamond Bar averages 286 sunny days per year. The US average is 205 sunny days.
Boulder City, Nevada gets 5.2 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.
Boulder City averages 0.2 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
Boulder City, Nevada
Summer High: the July high is around 102.5 degrees
Winter Low: the January low is 38.9
Rain: averages 5.2 inches of rain a year
Snow: averages 0.2 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
Boulder CityThe annual BestPlaces Comfort Index for Boulder City is 7.5 (10=best), which means it is more comfortable than most places in Nevada.
7.5 / 10
October, April and May are the most pleasant months in Boulder City, while July and August are the least comfortable months.
Diamond BarThe 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
12 AM PST
Mostly Clear
55°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Overnight | Mostly Clear | 50° / 72° | SW 0 to 5 mph |
| Tuesday Night | Mostly Clear | 53° / 77° | WSW 5 to 15 mph |
| Wednesday Night | Mostly Clear | 54° / 76° | SW 5 to 15 mph |
| Thursday Night | Mostly Clear | 55° / 80° | N 5 to 15 mph |
| Friday Night | Mostly Clear | 57° / 81° | SW 5 to 15 mph |
| Saturday Night | Mostly Clear | 57° / 78° | SSW 5 to 15 mph |
| Sunday Night | Patchy Fog | 57° / 74° | SSW 5 to 15 mph |
Average Monthly High / Low (°F)
| Month | Diamond Bar, CA | Boulder City, NV |
|---|
| January | 67° / 43° | 56° / 39° |
| February | 68° / 44° | 61° / 42° |
| March | 71° / 46° | 69° / 48° |
| April | 75° / 49° | 77° / 55° |
| May | 79° / 54° | 87° / 64° |
| June | 84° / 58° | 97° / 74° |
| July | 91° / 62° | 103° / 79° |
| August | 93° / 62° | 100° / 78° |
| September | 89° / 60° | 92° / 70° |
| October | 81° / 54° | 79° / 58° |
| November | 73° / 46° | 65° / 46° |
| December | 67° / 41° | 55° / 38° |
Hot, Freezing, Rainy, Snowy Days: Diamond Bar / Boulder City
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 1 / 4 | 6 / 3 | 0 / 0 |
| February | 0 / 0 | 1 / 2 | 6 / 5 | 0 / 0 |
| March | 0 / 0 | 0 / 0 | 5 / 3 | 0 / 0 |
| April | 2 / 2 | 0 / 0 | 3 / 2 | 0 / 0 |
| May | 3 / 12 | 0 / 0 | 1 / 1 | 0 / 0 |
| June | 7 / 25 | 0 / 0 | 1 / 1 | 0 / 0 |
| July | 18 / 30 | 0 / 0 | 0 / 3 | 0 / 0 |
| August | 21 / 29 | 0 / 0 | 0 / 3 | 0 / 0 |
| September | 15 / 20 | 0 / 0 | 1 / 2 | 0 / 0 |
| October | 6 / 3 | 0 / 0 | 2 / 2 | 0 / 0 |
| November | 1 / 0 | 1 / 1 | 3 / 2 | 0 / 0 |
| December | 0 / 0 | 2 / 5 | 4 / 3 | 0 / 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.
July is the hottest month for Boulder City with an average high temperature of 102.5°, which ranks it as warmer than most places in Nevada. In Boulder City, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boulder City are October, April and May.
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 Boulder City with an average of 38.4°. This is one of the warmest places in Nevada.
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 Boulder City, there are 121.6 days annually when the high temperature is over 90°, which is hotter than most places in Nevada.
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 Boulder City, there are 11.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Nevada.
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 Boulder City, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Nevada.
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 Boulder City with 0.9 inches of rain, and the driest month is May with 0.1 inches. The wettest season is Spring with 40% of yearly precipitation and 15% occurs in Summer, which is the driest season. The annual rainfall of 5.2 inches in Boulder City means that it is drier than most places in Nevada.
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 Boulder City with 4.5 days of rain, and June is the driest month with only 0.7 rainy days. There are 29.1 rainy days annually in Boulder City, which is less rainy than most places in Nevada. The rainiest season is Spring when it rains 37% of the time and the driest is Winter with only a 20% 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.
An annual snowfall of 0.2 inches in Boulder City means that it is less snowy than most places in Nevada.
Any measurable snowfall is a rare occurance in Diamond Bar.
December is the snowiest month in Boulder City with 0.2 inches of snow, and no months of the year have significant snowfall.
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
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
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
Start Your Review of Diamond Bar
Reviews for Boulder City 2 Reviews
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
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
Start Your Review of Boulder City
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