2025 Compare Climate & Weather:
Sidney, MT vs Lewistown, MT

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Highlights

On average, there are 196 sunny days per year in Lewistown. Sidney averages 201 sunny days per year. The US average is 205 sunny days.

Lewistown, Montana gets 15.8 inches of rain, on average, per year. Sidney, Montana gets 14.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Lewistown averages 72.3 inches of snow per year. Sidney averages 33.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Lewistown, Montana
Summer High: the July high is around 81 degrees
Winter Low: the January low is 13.5
Rain: averages 15.8 inches of rain a year
Snow: averages 72.3 inches of snow a year

Sidney, Montana
Summer High: the July high is around 87.2 degrees
Winter Low: the January low is 5.9
Rain: averages 14.2 inches of rain a year
Snow: averages 33.2 inches of snow a year

BestPlaces Comfort Index

Lewistown

The annual BestPlaces Comfort Index for Lewistown is 6.5 (10=best), which means it is less comfortable than most places in Montana.

6.5 / 10

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

Sidney

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

6.7 / 10

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

Average Monthly High / Low (°F)

Month	Sidney, MT	Lewistown, MT
January	27° / 6°	36° / 14°
February	33° / 11°	37° / 16°
March	46° / 21°	45° / 22°
April	61° / 32°	55° / 30°
May	72° / 43°	63° / 38°
June	80° / 52°	71° / 46°
July	87° / 57°	81° / 51°
August	87° / 55°	81° / 50°
September	75° / 44°	70° / 41°
October	60° / 33°	57° / 32°
November	42° / 20°	44° / 22°
December	29° / 8°	35° / 14°

Hot, Freezing, Rainy, Snowy Days: Sidney / Lewistown

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	30 / 29	5 / 6	5 / 7
February	0 / 0	27 / 26	4 / 6	4 / 6
March	0 / 0	27 / 26	5 / 9	3 / 7
April	0 / 0	15 / 18	6 / 10	1 / 5
May	1 / 0	3 / 6	10 / 12	0 / 2
June	4 / 0	0 / 0	10 / 13	0 / 0
July	12 / 4	0 / 0	8 / 10	0 / 0
August	12 / 5	0 / 0	6 / 9	0 / 0
September	3 / 1	2 / 3	6 / 8	0 / 1
October	0 / 0	13 / 15	6 / 7	1 / 3
November	0 / 0	26 / 24	5 / 6	3 / 5
December	0 / 0	30 / 28	6 / 7	6 / 7

July is the hottest month for Sidney with an average high temperature of 87.2°, which ranks it as one of the hottest places in Montana. In Sidney, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sidney are June, September and May.

August is the hottest month for Lewistown with an average high temperature of 81.1°, which ranks it as cooler than most places in Montana. In Lewistown, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lewistown are July, August and June.

January has the coldest nighttime temperatures for Sidney with an average of 5.9°. This is colder than most places in Montana.

January has the coldest nighttime temperatures for Lewistown with an average of 13.5°. This is about average compared to other places in Montana.

In Sidney, there are 31.5 days annually when the high temperature is over 90°, which is one of the hottest places in Montana.

In Lewistown, there are 10.5 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Sidney, there are 173.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Montana.

In Lewistown, there are 175.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Montana.

In Sidney, there are 30.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Montana.

In Lewistown, there are 19.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

June is the wettest month in Sidney with 2.8 inches of rain, and the driest month is February with 0.3 inches. The wettest season is Autumn with 46% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 14.2 inches in Sidney means that it is about average compared to other places in Montana.

June is the wettest month in Lewistown with 2.7 inches of rain, and the driest month is February with 0.4 inches. The wettest season is Autumn with 40% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 15.8 inches in Lewistown means that it is wetter than most places in Montana.

June is the rainiest month in Sidney with 10.3 days of rain, and February is the driest month with only 3.9 rainy days. There are 76.9 rainy days annually in Sidney, which is less rainy than most places in Montana. The rainiest season is Autumn when it rains 32% of the time and the driest is Spring with only a 19% chance of a rainy day.

June is the rainiest month in Lewistown with 12.7 days of rain, and February is the driest month with only 6.2 rainy days. There are 102.6 rainy days annually in Lewistown, which is rainier than most places in Montana. The rainiest season is Autumn when it rains 30% of the time and the driest is Spring with only a 19% chance of a rainy day.

An annual snowfall of 33.2 inches in Sidney means that it is less snowy than most places in Montana.

An annual snowfall of 72.3 inches in Lewistown means that it is snowier than most places in Montana.

December is the snowiest month in Sidney with 7.9 inches of snow, and 8 months of the year have significant snowfall.

March is the snowiest month in Lewistown with 14.2 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 Sidney 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 Lewistown 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:
Sidney, MT vs Lewistown, MT

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sidney / Lewistown

January has the coldest nighttime temperatures for Sidney with an average of 5.9°. This is colder than most places in Montana.

January has the coldest nighttime temperatures for Lewistown with an average of 13.5°. This is about average compared to other places in Montana.

In Sidney, there are 31.5 days annually when the high temperature is over 90°, which is one of the hottest places in Montana.

In Lewistown, there are 10.5 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Sidney, there are 30.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Montana.

In Lewistown, there are 19.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

An annual snowfall of 33.2 inches in Sidney means that it is less snowy than most places in Montana.

An annual snowfall of 72.3 inches in Lewistown means that it is snowier than most places in Montana.

December is the snowiest month in Sidney with 7.9 inches of snow, and 8 months of the year have significant snowfall.

March is the snowiest month in Lewistown with 14.2 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Lewistown 2 Reviews

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2025 Compare Climate & Weather:Sidney, MT vs Lewistown, MT

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sidney / Lewistown

January has the coldest nighttime temperatures for Sidney with an average of 5.9°. This is colder than most places in Montana.January has the coldest nighttime temperatures for Lewistown with an average of 13.5°. This is about average compared to other places in Montana.

In Sidney, there are 31.5 days annually when the high temperature is over 90°, which is one of the hottest places in Montana.In Lewistown, there are 10.5 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Sidney, there are 30.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Montana.In Lewistown, there are 19.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

An annual snowfall of 33.2 inches in Sidney means that it is less snowy than most places in Montana.An annual snowfall of 72.3 inches in Lewistown means that it is snowier than most places in Montana.

December is the snowiest month in Sidney with 7.9 inches of snow, and 8 months of the year have significant snowfall.March is the snowiest month in Lewistown with 14.2 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Sidney 2 Reviews

Reviews for Lewistown 2 Reviews

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Zips In Sidney, Montana

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2025 Compare Climate & Weather:
Sidney, MT vs Lewistown, MT

January has the coldest nighttime temperatures for Sidney with an average of 5.9°. This is colder than most places in Montana.

January has the coldest nighttime temperatures for Lewistown with an average of 13.5°. This is about average compared to other places in Montana.

In Sidney, there are 31.5 days annually when the high temperature is over 90°, which is one of the hottest places in Montana.

In Lewistown, there are 10.5 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Sidney, there are 30.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Montana.

In Lewistown, there are 19.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

An annual snowfall of 33.2 inches in Sidney means that it is less snowy than most places in Montana.

An annual snowfall of 72.3 inches in Lewistown means that it is snowier than most places in Montana.

December is the snowiest month in Sidney with 7.9 inches of snow, and 8 months of the year have significant snowfall.

March is the snowiest month in Lewistown with 14.2 inches of snow, and 9 months of the year have significant snowfall.