2025 Compare Climate & Weather:
Boulder, CO vs Aspen Park, CO

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Highlights

On average, there are 245 sunny days per year in Aspen Park. Boulder averages 245 sunny days per year. The US average is 205 sunny days.

Aspen Park, Colorado gets 17.3 inches of rain, on average, per year. Boulder, Colorado gets 18.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Aspen Park averages 94.5 inches of snow per year. Boulder averages 71.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Aspen Park, Colorado
Summer High: the July high is around 76.7 degrees
Winter Low: the January low is 10.3
Rain: averages 17.3 inches of rain a year
Snow: averages 94.5 inches of snow a year

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

BestPlaces Comfort Index

Aspen Park

The annual BestPlaces Comfort Index for Aspen Park is 6.2 (10=best), which means it is less comfortable than most places in Colorado.

6.2 / 10

July, August and June are the most pleasant months in Aspen Park, while December and January are the least comfortable months.

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.

Average Monthly High / Low (°F)

Month	Boulder, CO	Aspen Park, CO
January	47° / 19°	36° / 10°
February	48° / 20°	38° / 11°
March	55° / 27°	44° / 17°
April	62° / 34°	51° / 24°
May	72° / 43°	61° / 32°
June	82° / 51°	71° / 39°
July	88° / 57°	77° / 45°
August	86° / 55°	74° / 44°
September	78° / 46°	67° / 36°
October	66° / 36°	56° / 27°
November	54° / 26°	43° / 18°
December	45° / 18°	35° / 11°

Hot, Freezing, Rainy, Snowy Days: Boulder / Aspen Park

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	28 / 31	5 / 6	5 / 6
February	0 / 0	25 / 28	5 / 6	5 / 6
March	0 / 0	23 / 30	7 / 9	6 / 8
April	0 / 0	13 / 27	9 / 9	4 / 7
May	1 / 0	2 / 15	11 / 9	1 / 2
June	6 / 0	0 / 3	9 / 10	0 / 0
July	14 / 0	0 / 0	9 / 12	0 / 0
August	9 / 0	0 / 0	10 / 15	0 / 0
September	3 / 0	1 / 8	7 / 9	0 / 1
October	0 / 0	10 / 25	6 / 6	2 / 3
November	0 / 0	22 / 29	5 / 6	4 / 5
December	0 / 0	28 / 31	5 / 7	5 / 7

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.

July is the hottest month for Aspen Park with an average high temperature of 76.7°, which ranks it as cooler than most places in Colorado. In Aspen Park, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Aspen Park are July, August and June.

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

January has the coldest nighttime temperatures for Aspen Park with an average of 10.3°. This is colder than most places in Colorado.

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 Aspen Park, there are 0.1 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

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 Aspen Park, there are 226.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

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

In Aspen Park, there are 15.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

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.

August is the wettest month in Aspen Park with 2.6 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Autumn with 39% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 17.3 inches in Aspen Park means that it is about average compared to other places in Colorado.

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.

August is the rainiest month in Aspen Park with 14.8 days of rain, and November is the driest month with only 5.9 rainy days. There are 103.8 rainy days annually in Aspen Park, which is rainier than most places in Colorado. The rainiest season is Autumn when it rains 36% of the time and the driest is Spring with only a 18% chance of a rainy day.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.

An annual snowfall of 94.5 inches in Aspen Park means that it is snowier than most places in Colorado.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall.

March is the snowiest month in Aspen Park with 19.5 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 Boulder 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

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Reviews for Aspen Park 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

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2025 Compare Climate & Weather:
Boulder, CO vs Aspen Park, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boulder / Aspen Park

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

January has the coldest nighttime temperatures for Aspen Park with an average of 10.3°. This is colder than most places in Colorado.

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 Aspen Park, there are 0.1 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

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 Aspen Park, there are 226.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

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

In Aspen Park, there are 15.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.

An annual snowfall of 94.5 inches in Aspen Park means that it is snowier than most places in Colorado.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall.

March is the snowiest month in Aspen Park with 19.5 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Boulder 2 Reviews

Reviews for Aspen Park 2 Reviews

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2025 Compare Climate & Weather:Boulder, CO vs Aspen Park, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boulder / Aspen Park

December has the coldest nighttime temperatures for Boulder with an average of 18.3°. This is one of the warmest places in Colorado.January has the coldest nighttime temperatures for Aspen Park with an average of 10.3°. This is colder than most places in Colorado.

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 Aspen Park, there are 0.1 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

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 Aspen Park, there are 226.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Boulder, there are 5.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.In Aspen Park, there are 15.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.An annual snowfall of 94.5 inches in Aspen Park means that it is snowier than most places in Colorado.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall.March is the snowiest month in Aspen Park with 19.5 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Boulder 2 Reviews

Reviews for Aspen Park 2 Reviews

Most Recent Searches On Compare Climate & Weather

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Zips In Boulder, Colorado

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2025 Compare Climate & Weather:
Boulder, CO vs Aspen Park, CO

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

January has the coldest nighttime temperatures for Aspen Park with an average of 10.3°. This is colder than most places in Colorado.

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 Aspen Park, there are 0.1 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

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 Aspen Park, there are 226.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

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

In Aspen Park, there are 15.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.

An annual snowfall of 94.5 inches in Aspen Park means that it is snowier than most places in Colorado.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall.

March is the snowiest month in Aspen Park with 19.5 inches of snow, and 9 months of the year have significant snowfall.