2025 Compare Climate & Weather:
Idaho Falls, ID vs Portland, ME

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Highlights

On average, there are 203 sunny days per year in Portland. Idaho Falls averages 201 sunny days per year. The US average is 205 sunny days.

Portland, Maine gets 48.9 inches of rain, on average, per year. Idaho Falls, Idaho gets 12.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Portland averages 61 inches of snow per year. Idaho Falls averages 38.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Portland, Maine
Summer High: the July high is around 78.8 degrees
Winter Low: the January low is 10.8
Rain: averages 48.9 inches of rain a year
Snow: averages 61 inches of snow a year

Idaho Falls, Idaho
Summer High: the July high is around 86.2 degrees
Winter Low: the January low is 12.9
Rain: averages 12.2 inches of rain a year
Snow: averages 38.9 inches of snow a year

BestPlaces Comfort Index

Portland

The annual BestPlaces Comfort Index for Portland is 6.5 (10=best), which means it is more comfortable than most places in Maine.

6.5 / 10

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

Idaho Falls

The annual BestPlaces Comfort Index for Idaho Falls is 6.7 (10=best), which means it is more comfortable than most places in Idaho.

6.7 / 10

June, July and September are the most pleasant months in Idaho Falls, while December and January are the least comfortable months.

Average Monthly High / Low (°F)

Month	Idaho Falls, ID	Portland, ME
January	29° / 13°	31° / 11°
February	34° / 16°	34° / 14°
March	48° / 26°	42° / 23°
April	59° / 33°	54° / 33°
May	67° / 40°	64° / 43°
June	77° / 47°	73° / 53°
July	86° / 52°	79° / 58°
August	86° / 51°	78° / 57°
September	75° / 42°	70° / 49°
October	60° / 33°	59° / 37°
November	43° / 23°	48° / 29°
December	30° / 14°	37° / 18°

Hot, Freezing, Rainy, Snowy Days: Idaho Falls / Portland

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	30 / 30	11 / 11	7 / 8
February	0 / 0	27 / 26	9 / 9	6 / 6
March	0 / 0	25 / 26	8 / 11	3 / 5
April	0 / 0	14 / 13	8 / 11	2 / 1
May	0 / 0	4 / 2	10 / 12	1 / 0
June	2 / 1	0 / 0	7 / 12	0 / 0
July	9 / 2	0 / 0	5 / 11	0 / 0
August	9 / 1	0 / 0	5 / 9	0 / 0
September	1 / 0	2 / 1	5 / 9	0 / 0
October	0 / 0	15 / 9	7 / 10	1 / 0
November	0 / 0	26 / 20	9 / 11	6 / 1
December	0 / 0	30 / 28	10 / 11	8 / 6

July is the hottest month for Idaho Falls with an average high temperature of 86.2°, which ranks it as warmer than most places in Idaho. In Idaho Falls, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Idaho Falls are June, September and August.

July is the hottest month for Portland with an average high temperature of 78.8°, which ranks it as about average compared to other places in Maine. In Portland, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portland are August, July and June.

January has the coldest nighttime temperatures for Idaho Falls with an average of 12.9°. This is colder than most places in Idaho.

January has the coldest nighttime temperatures for Portland with an average of 10.8°. This is warmer than most places in Maine.

In Idaho Falls, there are 20.2 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.

In Portland, there are 3.8 days annually when the high temperature is over 90°, which is hotter than most places in Maine.

In Idaho Falls, there are 172.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

In Portland, there are 154.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maine.

In Idaho Falls, there are 10.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

In Portland, there are 12.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maine.

May is the wettest month in Idaho Falls with 1.7 inches of rain, and the driest month is July with 0.6 inches. The wettest season is Summer with 34% of yearly precipitation and 20% occurs in Autumn, which is the driest season. The annual rainfall of 12.2 inches in Idaho Falls means that it is drier than most places in Idaho.

November is the wettest month in Portland with 5.0 inches of rain, and the driest month is August 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 48.9 inches in Portland means that it is about average compared to other places in Maine.

January is the rainiest month in Idaho Falls with 10.5 days of rain, and July is the driest month with only 4.6 rainy days. There are 93.3 rainy days annually in Idaho Falls, which is about average compared to other places in Idaho. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 19% chance of a rainy day.

May is the rainiest month in Portland with 12.4 days of rain, and February is the driest month with only 9.2 rainy days. There are 128.3 rainy days annually in Portland, which is about average compared to other places in Maine. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 24% chance of a rainy day.

An annual snowfall of 38.9 inches in Idaho Falls means that it is less snowy than most places in Idaho.

An annual snowfall of 61.0 inches in Portland means that it is less snowy than most places in Maine.

December is the snowiest month in Idaho Falls with 10.9 inches of snow, and 7 months of the year have significant snowfall.

January is the snowiest month in Portland with 18.1 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 Idaho Falls 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 Portland 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:
Idaho Falls, ID vs Portland, ME

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Idaho Falls / Portland

January has the coldest nighttime temperatures for Idaho Falls with an average of 12.9°. This is colder than most places in Idaho.

January has the coldest nighttime temperatures for Portland with an average of 10.8°. This is warmer than most places in Maine.

In Idaho Falls, there are 20.2 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.

In Portland, there are 3.8 days annually when the high temperature is over 90°, which is hotter than most places in Maine.

In Idaho Falls, there are 172.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

In Portland, there are 154.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maine.

In Idaho Falls, there are 10.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

In Portland, there are 12.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maine.

An annual snowfall of 38.9 inches in Idaho Falls means that it is less snowy than most places in Idaho.

An annual snowfall of 61.0 inches in Portland means that it is less snowy than most places in Maine.

December is the snowiest month in Idaho Falls with 10.9 inches of snow, and 7 months of the year have significant snowfall.

January is the snowiest month in Portland with 18.1 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Idaho Falls 2 Reviews

Reviews for Portland 2 Reviews

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2025 Compare Climate & Weather:Idaho Falls, ID vs Portland, ME

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Idaho Falls / Portland

January has the coldest nighttime temperatures for Idaho Falls with an average of 12.9°. This is colder than most places in Idaho.January has the coldest nighttime temperatures for Portland with an average of 10.8°. This is warmer than most places in Maine.

In Idaho Falls, there are 20.2 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.In Portland, there are 3.8 days annually when the high temperature is over 90°, which is hotter than most places in Maine.

In Idaho Falls, there are 172.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.In Portland, there are 154.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maine.

In Idaho Falls, there are 10.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.In Portland, there are 12.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maine.

An annual snowfall of 38.9 inches in Idaho Falls means that it is less snowy than most places in Idaho.An annual snowfall of 61.0 inches in Portland means that it is less snowy than most places in Maine.

December is the snowiest month in Idaho Falls with 10.9 inches of snow, and 7 months of the year have significant snowfall.January is the snowiest month in Portland with 18.1 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Portland 2 Reviews

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2025 Compare Climate & Weather:
Idaho Falls, ID vs Portland, ME

January has the coldest nighttime temperatures for Idaho Falls with an average of 12.9°. This is colder than most places in Idaho.

January has the coldest nighttime temperatures for Portland with an average of 10.8°. This is warmer than most places in Maine.

In Idaho Falls, there are 20.2 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.

In Portland, there are 3.8 days annually when the high temperature is over 90°, which is hotter than most places in Maine.

In Idaho Falls, there are 172.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

In Portland, there are 154.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maine.

In Idaho Falls, there are 10.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

In Portland, there are 12.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maine.

An annual snowfall of 38.9 inches in Idaho Falls means that it is less snowy than most places in Idaho.

An annual snowfall of 61.0 inches in Portland means that it is less snowy than most places in Maine.

December is the snowiest month in Idaho Falls with 10.9 inches of snow, and 7 months of the year have significant snowfall.

January is the snowiest month in Portland with 18.1 inches of snow, and 6 months of the year have significant snowfall.