2025 Compare Climate & Weather:
Ketchum, ID vs Lewiston, ME

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Highlights

On average, there are 197 sunny days per year in Lewiston. Ketchum averages 204 sunny days per year. The US average is 205 sunny days.

Lewiston, Maine gets 47.7 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.

Lewiston averages 74.2 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

Lewiston, Maine
Summer High: the July high is around 78.8 degrees
Winter Low: the January low is 8.9
Rain: averages 47.7 inches of rain a year
Snow: averages 74.2 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

Lewiston

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

6.3 / 10

August, July and June are the most pleasant months in Lewiston, while January and February 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	Lewiston, ME
January	31° / 8°	28° / 9°
February	35° / 10°	32° / 12°
March	44° / 20°	41° / 22°
April	54° / 27°	53° / 33°
May	63° / 35°	65° / 44°
June	71° / 41°	74° / 54°
July	82° / 47°	79° / 59°
August	81° / 45°	78° / 58°
September	71° / 37°	69° / 50°
October	58° / 28°	57° / 38°
November	41° / 18°	45° / 29°
December	30° / 8°	34° / 18°

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

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	31 / 31	8 / 11	8 / 8
February	0 / 0	28 / 27	7 / 9	7 / 6
March	0 / 0	29 / 28	7 / 11	5 / 5
April	0 / 0	23 / 13	7 / 11	2 / 1
May	0 / 0	10 / 2	8 / 13	0 / 0
June	0 / 0	3 / 0	8 / 13	0 / 0
July	3 / 1	0 / 0	5 / 11	0 / 0
August	2 / 1	1 / 0	5 / 11	0 / 0
September	0 / 0	7 / 1	4 / 9	0 / 0
October	0 / 0	22 / 8	5 / 11	1 / 0
November	0 / 0	29 / 20	7 / 11	5 / 2
December	0 / 0	31 / 29	8 / 11	9 / 7

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 Lewiston with an average high temperature of 78.8°, which ranks it as about average compared to other places in Maine. In Lewiston, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lewiston 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 Lewiston with an average of 8.9°. This is about average compared to other places in Maine.

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 Lewiston, there are 3.3 days annually when the high temperature is over 90°, which is about average compared to other places in Maine.

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 Lewiston, there are 156.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maine.

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 Lewiston, there are 14.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maine.

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.

November is the wettest month in Lewiston with 4.8 inches of rain, and the driest month is February with 3.3 inches. The wettest season is Winter with 28% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 47.7 inches in Lewiston means that it is about average compared to other places in Maine.

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.

June is the rainiest month in Lewiston with 12.9 days of rain, and February is the driest month with only 9.1 rainy days. There are 132.0 rainy days annually in Lewiston, which is rainier than most places in Maine. The rainiest season is Autumn when it rains 26% of the time and the driest is Winter with only a 24% 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 74.2 inches in Lewiston means that it is snowier than most places in Maine.

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 months of the year have significant snowfall.

January is the snowiest month in Lewiston with 21.2 inches of snow, and 6 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 Lewiston 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:
Ketchum, ID vs Lewiston, ME

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

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

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 Lewiston with an average of 8.9°. This is about average compared to other places in Maine.

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 Lewiston, there are 3.3 days annually when the high temperature is over 90°, which is about average compared to other places in Maine.

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 Lewiston, there are 156.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maine.

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 Lewiston, there are 14.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maine.

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

An annual snowfall of 74.2 inches in Lewiston means that it is snowier than most places in Maine.

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 months of the year have significant snowfall.

January is the snowiest month in Lewiston with 21.2 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Ketchum 2 Reviews

Reviews for Lewiston 2 Reviews

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2025 Compare Climate & Weather:Ketchum, ID vs Lewiston, ME

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

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

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 Lewiston with an average of 8.9°. This is about average compared to other places in Maine.

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 Lewiston, there are 3.3 days annually when the high temperature is over 90°, which is about average compared to other places in Maine.

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 Lewiston, there are 156.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maine.

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 Lewiston, there are 14.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maine.

An annual snowfall of 101.6 inches in Ketchum means that it is one of the snowiest places in Idaho.An annual snowfall of 74.2 inches in Lewiston means that it is snowier than most places in Maine.

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 months of the year have significant snowfall.January is the snowiest month in Lewiston with 21.2 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Ketchum 2 Reviews

Reviews for Lewiston 2 Reviews

Most Recent Searches On Compare Climate & Weather

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Zips In Ketchum, Idaho

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Learn More About KETCHUM, IDAHO

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2025 Compare Climate & Weather:
Ketchum, ID vs Lewiston, ME

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 Lewiston with an average of 8.9°. This is about average compared to other places in Maine.

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 Lewiston, there are 3.3 days annually when the high temperature is over 90°, which is about average compared to other places in Maine.

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 Lewiston, there are 14.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maine.

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

An annual snowfall of 74.2 inches in Lewiston means that it is snowier than most places in Maine.

December is the snowiest month in Ketchum with 28.3 inches of snow, and 8 months of the year have significant snowfall.

January is the snowiest month in Lewiston with 21.2 inches of snow, and 6 months of the year have significant snowfall.