2025 Compare Climate & Weather:
Ketchum, ID vs Aspen, CO

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Highlights

On average, there are 246 sunny days per year in Aspen. Ketchum averages 204 sunny days per year. The US average is 205 sunny days.

Aspen, Colorado gets 19.8 inches of rain, on average, per year. Ketchum, Idaho gets 13.8 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. Ketchum averages 101.6 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

Ketchum, Idaho
Summer High: the July high is around 81.8 degrees
Winter Low: the January low is 7.6
Rain: averages 13.8 inches of rain a year
Snow: averages 101.6 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.

Ketchum

The annual BestPlaces Comfort Index for Ketchum is 6.3 (10=best), which means it is less comfortable than most places in Idaho.

6.3 / 10

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

Average Monthly High / Low (°F)

Month	Ketchum, ID	Aspen, CO
January	31° / 8°	34° / 7°
February	35° / 10°	37° / 9°
March	44° / 20°	44° / 18°
April	54° / 27°	52° / 26°
May	63° / 35°	63° / 33°
June	71° / 41°	74° / 40°
July	82° / 47°	80° / 46°
August	81° / 45°	77° / 45°
September	71° / 37°	69° / 37°
October	58° / 28°	57° / 28°
November	41° / 18°	43° / 17°
December	30° / 8°	33° / 8°

Hot, Freezing, Rainy, Snowy Days: Ketchum / Aspen

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

July is the hottest month for Ketchum with an average high temperature of 81.8°, which ranks it as cooler than most places in Idaho. In Ketchum, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ketchum are August, July and June.

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 Ketchum with an average of 7.6°. This is one of the coldest places in Idaho.

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

In Ketchum, there are 4.9 days annually when the high temperature is over 90°, which is one of the coolest places in Idaho.

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

In Ketchum, there are 211.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

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 Ketchum, there are 21.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

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

December is the wettest month in Ketchum with 1.8 inches of rain, and the driest month is August with 0.6 inches. The wettest season is Spring with 32% of yearly precipitation and 19% occurs in Autumn, which is the driest season. The annual rainfall of 13.8 inches in Ketchum means that it is about average compared to other places in Idaho.

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.

May is the rainiest month in Ketchum with 8.3 days of rain, and September is the driest month with only 4.4 rainy days. There are 77.5 rainy days annually in Ketchum, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 29% of the time and the driest is Winter with only a 21% 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 101.6 inches in Ketchum means that it is one of the snowiest places in Idaho.

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

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 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 Ketchum 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:
Ketchum, ID vs Aspen, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Ketchum / Aspen

January has the coldest nighttime temperatures for Ketchum with an average of 7.6°. This is one of the coldest places in Idaho.

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

In Ketchum, there are 4.9 days annually when the high temperature is over 90°, which is one of the coolest places in Idaho.

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

In Ketchum, there are 211.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

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 Ketchum, there are 21.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

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 101.6 inches in Ketchum means that it is one of the snowiest places in Idaho.

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

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 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 Ketchum 2 Reviews

Reviews for Aspen 2 Reviews

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2025 Compare Climate & Weather:Ketchum, ID vs Aspen, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Ketchum / Aspen

January has the coldest nighttime temperatures for Ketchum with an average of 7.6°. This is one of the coldest places in Idaho.January has the coldest nighttime temperatures for Aspen with an average of 6.8°. This is colder than most places in Colorado.

In Ketchum, there are 4.9 days annually when the high temperature is over 90°, which is one of the coolest places in Idaho.In Aspen, there are 0.8 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Ketchum, there are 211.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.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 Ketchum, there are 21.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.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 101.6 inches in Ketchum means that it is one of the snowiest places in Idaho.An annual snowfall of 152.6 inches in Aspen means that it is one of the snowiest places in Colorado.

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 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 Ketchum 2 Reviews

Reviews for Aspen 2 Reviews

Most Recent Searches On Compare Climate & Weather

Compare Cost of Living

Zips In Ketchum, Idaho

Zips In ASPEN, COLORADO

Learn More About KETCHUM, IDAHO

Learn More About Aspen, Colorado

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BestPlaces Tools

About BestPlaces

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2025 Compare Climate & Weather:
Ketchum, ID vs Aspen, CO

January has the coldest nighttime temperatures for Ketchum with an average of 7.6°. This is one of the coldest places in Idaho.

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

In Ketchum, there are 4.9 days annually when the high temperature is over 90°, which is one of the coolest places in Idaho.

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

In Ketchum, there are 211.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

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 Ketchum, there are 21.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

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 101.6 inches in Ketchum means that it is one of the snowiest places in Idaho.

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

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 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.