2025 Compare Climate & Weather:
Mammoth Lakes, CA vs Aspen, CO

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Highlights

On average, there are 246 sunny days per year in Aspen. Mammoth Lakes averages 275 sunny days per year. The US average is 205 sunny days.

Aspen, Colorado gets 19.8 inches of rain, on average, per year. Mammoth Lakes, California gets 14.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Aspen averages 152.6 inches of snow per year. Mammoth Lakes averages 93.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Aspen, Colorado
Summer High: the July high is around 79.6 degrees
Winter Low: the January low is 6.8
Rain: averages 19.8 inches of rain a year
Snow: averages 152.6 inches of snow a year

Mammoth Lakes, California
Summer High: the July high is around 77.5 degrees
Winter Low: the January low is 13.5
Rain: averages 14.9 inches of rain a year
Snow: averages 93.2 inches of snow a year

BestPlaces Comfort Index

Aspen

The annual BestPlaces Comfort Index for Aspen is 5.9 (10=best), which means it is less comfortable than most places in Colorado.

5.9 / 10

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

Mammoth Lakes

The annual BestPlaces Comfort Index for Mammoth Lakes is 6.5 (10=best), which means it is one of the least comfortable places in California.

6.5 / 10

July, August and June are the most pleasant months in Mammoth Lakes, while January and February are the least comfortable months.

Average Monthly High / Low (°F)

Month	Mammoth Lakes, CA	Aspen, CO
January	40° / 14°	34° / 7°
February	41° / 15°	37° / 9°
March	45° / 19°	44° / 18°
April	51° / 24°	52° / 26°
May	60° / 32°	63° / 33°
June	69° / 38°	74° / 40°
July	78° / 44°	80° / 46°
August	77° / 43°	77° / 45°
September	70° / 36°	69° / 37°
October	59° / 27°	57° / 28°
November	48° / 20°	43° / 17°
December	41° / 15°	33° / 8°

Hot, Freezing, Rainy, Snowy Days: Mammoth Lakes / Aspen

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	31 / 31	10 / 9	5 / 10
February	0 / 0	28 / 28	9 / 9	4 / 10
March	0 / 0	29 / 30	9 / 10	5 / 9
April	0 / 0	25 / 25	7 / 9	3 / 7
May	0 / 0	16 / 13	5 / 9	2 / 2
June	0 / 0	6 / 4	4 / 8	0 / 0
July	0 / 1	2 / 1	4 / 10	0 / 0
August	0 / 0	3 / 1	4 / 12	0 / 0
September	0 / 0	9 / 6	4 / 10	0 / 1
October	0 / 0	23 / 22	5 / 8	1 / 3
November	0 / 0	28 / 29	8 / 8	3 / 8
December	0 / 0	30 / 31	8 / 9	5 / 10

July is the hottest month for Mammoth Lakes with an average high temperature of 77.5°, which ranks it as cooler than most places in California. In Mammoth Lakes, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mammoth Lakes are July, August and September.

July is the hottest month for Aspen with an average high temperature of 79.6°, which ranks it as cooler than most places in Colorado. In Aspen, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Aspen are August, July and June.

January has the coldest nighttime temperatures for Mammoth Lakes with an average of 13.5°. This is one of the coldest places in California.

January has the coldest nighttime temperatures for Aspen with an average of 6.8°. This is colder than most places in Colorado.

In Mammoth Lakes, there are 0.1 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Aspen, there are 0.8 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Mammoth Lakes, there are 229.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in California.

In Aspen, there are 220.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Mammoth Lakes, there are 10.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in California.

In Aspen, there are 20.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

February is the wettest month in Mammoth Lakes with 2.3 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 45% of yearly precipitation and 11% occurs in Autumn, which is the driest season. The annual rainfall of 14.9 inches in Mammoth Lakes means that it is drier than most places in California.

September is the wettest month in Aspen with 1.9 inches of rain, and the driest month is June with 1.2 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 19.8 inches in Aspen means that it is wetter than most places in Colorado.

January is the rainiest month in Mammoth Lakes with 10.0 days of rain, and June is the driest month with only 4.1 rainy days. There are 77.0 rainy days annually in Mammoth Lakes, which is rainier than most places in California. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 16% chance of a rainy day.

August is the rainiest month in Aspen with 12.3 days of rain, and June is the driest month with only 7.6 rainy days. There are 110.7 rainy days annually in Aspen, which is rainier than most places in Colorado. The rainiest season is Autumn when it rains 27% of the time and the driest is Winter with only a 23% chance of a rainy day.

An annual snowfall of 93.2 inches in Mammoth Lakes means that it is one of the snowiest places in California.

An annual snowfall of 152.6 inches in Aspen means that it is one of the snowiest places in Colorado.

March is the snowiest month in Mammoth Lakes with 21.1 inches of snow, and 10 months of the year have significant snowfall.

March is the snowiest month in Aspen with 24.4 inches of snow, and 10 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 Mammoth Lakes 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 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 Aspen

See all reviews

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2025 Compare Climate & Weather:
Mammoth Lakes, CA vs Aspen, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Mammoth Lakes / Aspen

January has the coldest nighttime temperatures for Mammoth Lakes with an average of 13.5°. This is one of the coldest places in California.

January has the coldest nighttime temperatures for Aspen with an average of 6.8°. This is colder than most places in Colorado.

In Mammoth Lakes, there are 0.1 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Aspen, there are 0.8 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Mammoth Lakes, there are 229.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in California.

In Aspen, there are 220.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Mammoth Lakes, there are 10.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in California.

In Aspen, there are 20.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

An annual snowfall of 93.2 inches in Mammoth Lakes means that it is one of the snowiest places in California.

An annual snowfall of 152.6 inches in Aspen means that it is one of the snowiest places in Colorado.

March is the snowiest month in Mammoth Lakes with 21.1 inches of snow, and 10 months of the year have significant snowfall.

March is the snowiest month in Aspen with 24.4 inches of snow, and 10 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Mammoth Lakes 2 Reviews

Reviews for Aspen 2 Reviews

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2025 Compare Climate & Weather:Mammoth Lakes, CA vs Aspen, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Mammoth Lakes / Aspen

January has the coldest nighttime temperatures for Mammoth Lakes with an average of 13.5°. This is one of the coldest places in California.January has the coldest nighttime temperatures for Aspen with an average of 6.8°. This is colder than most places in Colorado.

In Mammoth Lakes, there are 0.1 days annually when the high temperature is over 90°, which is one of the coolest places in California.In Aspen, there are 0.8 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Mammoth Lakes, there are 229.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in California.In Aspen, there are 220.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Mammoth Lakes, there are 10.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in California.In Aspen, there are 20.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

An annual snowfall of 93.2 inches in Mammoth Lakes means that it is one of the snowiest places in California.An annual snowfall of 152.6 inches in Aspen means that it is one of the snowiest places in Colorado.

March is the snowiest month in Mammoth Lakes with 21.1 inches of snow, and 10 months of the year have significant snowfall.March is the snowiest month in Aspen with 24.4 inches of snow, and 10 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Mammoth Lakes 2 Reviews

Reviews for Aspen 2 Reviews

Most Recent Searches On Compare Climate & Weather

Compare Cost of Living

Zips In Mammoth Lakes, California

Zips In ASPEN, COLORADO

Learn More About MAMMOTH LAKES, CALIFORNIA

Learn More About Aspen, Colorado

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BestPlaces Tools

About BestPlaces

Follow Us

2025 Compare Climate & Weather:
Mammoth Lakes, CA vs Aspen, CO

January has the coldest nighttime temperatures for Mammoth Lakes with an average of 13.5°. This is one of the coldest places in California.

January has the coldest nighttime temperatures for Aspen with an average of 6.8°. This is colder than most places in Colorado.

In Mammoth Lakes, there are 0.1 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Aspen, there are 0.8 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Mammoth Lakes, there are 229.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in California.

In Aspen, there are 220.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Mammoth Lakes, there are 10.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in California.

In Aspen, there are 20.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Colorado.

An annual snowfall of 93.2 inches in Mammoth Lakes means that it is one of the snowiest places in California.

An annual snowfall of 152.6 inches in Aspen means that it is one of the snowiest places in Colorado.

March is the snowiest month in Mammoth Lakes with 21.1 inches of snow, and 10 months of the year have significant snowfall.

March is the snowiest month in Aspen with 24.4 inches of snow, and 10 months of the year have significant snowfall.