2025 Compare Climate & Weather:
Polson, MT vs Lewiston, ID

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Highlights

On average, there are 169 sunny days per year in Lewiston. Polson averages 153 sunny days per year. The US average is 205 sunny days.

Lewiston, Idaho gets 15.8 inches of rain, on average, per year. Polson, Montana gets 17.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Lewiston averages 12.5 inches of snow per year. Polson averages 37.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Lewiston, Idaho
Summer High: the July high is around 88.3 degrees
Winter Low: the January low is 28.5
Rain: averages 15.8 inches of rain a year
Snow: averages 12.5 inches of snow a year

Polson, Montana
Summer High: the July high is around 81.9 degrees
Winter Low: the January low is 22.8
Rain: averages 17.6 inches of rain a year
Snow: averages 37.3 inches of snow a year

BestPlaces Comfort Index

Lewiston

The annual BestPlaces Comfort Index for Lewiston is 7.2 (10=best), which means it is one of the most pleasant places in Idaho.

7.2 / 10

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

Polson

The annual BestPlaces Comfort Index for Polson is 6.7 (10=best), which means it is about average compared to other places in Montana.

6.7 / 10

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

Average Monthly High / Low (°F)

Month	Polson, MT	Lewiston, ID
January	34° / 23°	41° / 29°
February	38° / 23°	46° / 30°
March	47° / 29°	54° / 34°
April	57° / 35°	62° / 39°
May	65° / 42°	70° / 46°
June	72° / 48°	78° / 52°
July	82° / 54°	88° / 58°
August	82° / 53°	88° / 57°
September	70° / 45°	78° / 49°
October	56° / 36°	62° / 40°
November	42° / 29°	48° / 33°
December	33° / 22°	39° / 27°

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

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	26 / 20	10 / 12	6 / 3
February	0 / 0	24 / 16	8 / 10	4 / 2
March	0 / 0	21 / 11	9 / 12	3 / 1
April	0 / 0	10 / 4	9 / 11	1 / 0
May	0 / 1	2 / 1	11 / 11	0 / 0
June	0 / 4	0 / 0	12 / 9	0 / 0
July	5 / 15	0 / 0	6 / 5	0 / 0
August	4 / 14	0 / 0	6 / 4	0 / 0
September	0 / 4	1 / 0	7 / 5	0 / 0
October	0 / 0	8 / 4	9 / 8	0 / 0
November	0 / 0	19 / 12	11 / 13	3 / 1
December	0 / 0	27 / 22	10 / 12	6 / 4

July is the hottest month for Polson with an average high temperature of 81.9°, which ranks it as cooler than most places in Montana. In Polson, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Polson are August, July and June.

July is the hottest month for Lewiston with an average high temperature of 88.3°, which ranks it as warmer than most places in Idaho. 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 September, June and May.

December has the coldest nighttime temperatures for Polson with an average of 21.9°. This is one of the warmest places in Montana.

December has the coldest nighttime temperatures for Lewiston with an average of 27.1°. This is one of the warmest places in Idaho.

In Polson, there are 9.8 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Lewiston, there are 36.8 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Polson, there are 139.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Montana.

In Lewiston, there are 88.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Polson, there are 3.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Montana.

In Lewiston, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Idaho.

June is the wettest month in Polson with 2.6 inches of rain, and the driest month is February with 0.8 inches. The wettest season is Summer with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 17.6 inches in Polson means that it is wetter than most places in Montana.

November is the wettest month in Lewiston with 1.8 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Summer with 31% of yearly precipitation and 17% occurs in Autumn, which is the driest season. The annual rainfall of 15.8 inches in Lewiston means that it is about average compared to other places in Idaho.

June is the rainiest month in Polson with 11.5 days of rain, and July is the driest month with only 5.9 rainy days. There are 108.4 rainy days annually in Polson, which is rainier than most places in Montana. The rainiest season is Summer when it rains 27% of the time and the driest is Autumn with only a 22% chance of a rainy day.

November is the rainiest month in Lewiston with 12.8 days of rain, and August is the driest month with only 4.2 rainy days. There are 110.4 rainy days annually in Lewiston, which is rainier than most places in Idaho. The rainiest season is Spring when it rains 30% of the time and the driest is Autumn with only a 16% chance of a rainy day.

An annual snowfall of 37.3 inches in Polson means that it is less snowy than most places in Montana.

An annual snowfall of 12.5 inches in Lewiston means that it is one of the least snowy places in Idaho.

December is the snowiest month in Polson with 11.4 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Lewiston with 4.5 inches of snow, and 5 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 Polson 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

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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:
Polson, MT vs Lewiston, ID

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

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

December has the coldest nighttime temperatures for Polson with an average of 21.9°. This is one of the warmest places in Montana.

December has the coldest nighttime temperatures for Lewiston with an average of 27.1°. This is one of the warmest places in Idaho.

In Polson, there are 9.8 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Lewiston, there are 36.8 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Polson, there are 139.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Montana.

In Lewiston, there are 88.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Polson, there are 3.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Montana.

In Lewiston, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Idaho.

An annual snowfall of 37.3 inches in Polson means that it is less snowy than most places in Montana.

An annual snowfall of 12.5 inches in Lewiston means that it is one of the least snowy places in Idaho.

December is the snowiest month in Polson with 11.4 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Lewiston with 4.5 inches of snow, and 5 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Lewiston 2 Reviews

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2025 Compare Climate & Weather:Polson, MT vs Lewiston, ID

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

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

December has the coldest nighttime temperatures for Polson with an average of 21.9°. This is one of the warmest places in Montana.December has the coldest nighttime temperatures for Lewiston with an average of 27.1°. This is one of the warmest places in Idaho.

In Polson, there are 9.8 days annually when the high temperature is over 90°, which is cooler than most places in Montana.In Lewiston, there are 36.8 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Polson, there are 139.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Montana.In Lewiston, there are 88.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Polson, there are 3.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Montana.In Lewiston, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Idaho.

An annual snowfall of 37.3 inches in Polson means that it is less snowy than most places in Montana.An annual snowfall of 12.5 inches in Lewiston means that it is one of the least snowy places in Idaho.

December is the snowiest month in Polson with 11.4 inches of snow, and 6 months of the year have significant snowfall.December is the snowiest month in Lewiston with 4.5 inches of snow, and 5 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Lewiston 2 Reviews

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2025 Compare Climate & Weather:
Polson, MT vs Lewiston, ID

December has the coldest nighttime temperatures for Polson with an average of 21.9°. This is one of the warmest places in Montana.

December has the coldest nighttime temperatures for Lewiston with an average of 27.1°. This is one of the warmest places in Idaho.

In Polson, there are 9.8 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Lewiston, there are 36.8 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

In Polson, there are 139.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Montana.

In Lewiston, there are 88.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Polson, there are 3.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Montana.

In Lewiston, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Idaho.

An annual snowfall of 37.3 inches in Polson means that it is less snowy than most places in Montana.

An annual snowfall of 12.5 inches in Lewiston means that it is one of the least snowy places in Idaho.

December is the snowiest month in Polson with 11.4 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Lewiston with 4.5 inches of snow, and 5 months of the year have significant snowfall.