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2025 Compare Climate & Weather:
Las Vegas, NV vs Boulder, CO

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Highlights

On average, there are 245 sunny days per year in Boulder. Las Vegas averages 294 sunny days per year. The US average is 205 sunny days.

Boulder, Colorado gets 18.1 inches of rain, on average, per year. Las Vegas, Nevada gets 5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Boulder averages 71.1 inches of snow per year. Las Vegas averages 0.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Boulder, Colorado
Summer High:
the July high is around 88.1 degrees
Winter Low: the January low is 18.9
Rain: averages 18.1 inches of rain a year
Snow: averages 71.1 inches of snow a year

Las Vegas, Nevada
Summer High:
the July high is around 103.8 degrees
Winter Low: the January low is 37.1
Rain: averages 5 inches of rain a year
Snow: averages 0.3 inches of snow a year

BestPlaces Comfort Index
Boulder

The annual BestPlaces Comfort Index for Boulder is 7.1 (10=best), which means it is about average compared to other places in Colorado.

7.1 / 10
September, June and August are the most pleasant months in Boulder, while December and January are the least comfortable months.

Las Vegas

The annual BestPlaces Comfort Index for Las Vegas is 7.4 (10=best), which means it is more comfortable than most places in Nevada.

7.4 / 10
October, April and March are the most pleasant months in Las Vegas, while July and August are the least comfortable months.

Average Monthly High / Low (°F)
MonthLas Vegas, NVBoulder, CO
January58° / 37°47° / 19°
February62° / 41°48° / 20°
March70° / 47°55° / 27°
April78° / 53°62° / 34°
May88° / 63°72° / 43°
June98° / 72°82° / 51°
July104° / 78°88° / 57°
August101° / 76°86° / 55°
September93° / 68°78° / 46°
October80° / 56°66° / 36°
November66° / 44°54° / 26°
December56° / 37°45° / 18°
Hot, Freezing, Rainy, Snowy Days: Las Vegas / Boulder
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 06 / 283 / 50 / 5
February0 / 02 / 255 / 50 / 5
March0 / 00 / 233 / 70 / 6
April3 / 00 / 132 / 90 / 4
May14 / 10 / 21 / 110 / 1
June26 / 60 / 01 / 90 / 0
July31 / 140 / 02 / 90 / 0
August30 / 90 / 02 / 100 / 0
September22 / 30 / 12 / 70 / 0
October4 / 00 / 102 / 60 / 2
November0 / 01 / 222 / 50 / 4
December0 / 07 / 283 / 50 / 5
July is the hottest month for Las Vegas with an average high temperature of 103.8°, which ranks it as warmer than most places in Nevada. In Las Vegas, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Las Vegas are April, October and March.

July is the hottest month for Boulder with an average high temperature of 88.1°, which ranks it as about average compared to other places in Colorado. In Boulder, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boulder are September, June and May.
December has the coldest nighttime temperatures for Las Vegas with an average of 36.6°. This is one of the warmest places in Nevada.

December has the coldest nighttime temperatures for Boulder with an average of 18.3°. This is one of the warmest places in Colorado.

In Las Vegas, there are 129.0 days annually when the high temperature is over 90°, which is hotter than most places in Nevada.

In Boulder, there are 32.4 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Las Vegas, there are 16.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Nevada.

In Boulder, there are 151.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Las Vegas, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Nevada.

In Boulder, there are 5.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

February is the wettest month in Las Vegas with 0.8 inches of rain, and the driest month is May with 0.1 inches. The wettest season is Spring with 40% of yearly precipitation and 17% occurs in Summer, which is the driest season. The annual rainfall of 5.0 inches in Las Vegas means that it is drier than most places in Nevada.


May is the wettest month in Boulder with 2.5 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Summer with 37% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 18.1 inches in Boulder means that it is wetter than most places in Colorado.

February is the rainiest month in Las Vegas with 4.6 days of rain, and June is the driest month with only 0.6 rainy days. There are 26.1 rainy days annually in Las Vegas, which is one of the least rainy places in Nevada. The rainiest season is Spring when it rains 40% of the time and the driest is Winter with only a 20% chance of a rainy day.

May is the rainiest month in Boulder with 10.5 days of rain, and January is the driest month with only 4.7 rainy days. There are 88.0 rainy days annually in Boulder, which is rainier than most places in Colorado. The rainiest season is Autumn when it rains 31% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 0.3 inches in Las Vegas means that it is less snowy than most places in Nevada.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.
December is the snowiest month in Las Vegas with 0.2 inches of snow, and no months of the year have significant snowfall.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 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 Las Vegas    2 Reviews

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

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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

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Start Your Review of Las Vegas

Reviews for Boulder    2 Reviews

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

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 Boulder

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Zips In Las Vegas, Nevada
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Zips In BOULDER, COLORADO
80302, 80304, 80301, 80303, 80305, 80310
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