The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Portland, ME vs Boise City, ID

2025 Compare Climate & Weather:
Portland, ME vs Boise City, ID

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Highlights

On average, there are 206 sunny days per year in Boise City. Portland averages 203 sunny days per year. The US average is 205 sunny days.

Boise City, Idaho gets 13 inches of rain, on average, per year. Portland, Maine gets 48.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Boise City averages 17.5 inches of snow per year. Portland averages 61 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Boise City, Idaho
Summer High: the July high is around 91.6 degrees
Winter Low: the January low is 23.7
Rain: averages 13 inches of rain a year
Snow: averages 17.5 inches of snow a year

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

BestPlaces Comfort Index
Boise City

The annual BestPlaces Comfort Index for Boise is 7.3 (10=best), which means it is one of the most pleasant places in Idaho.

7.3 / 10
September, June and May are the most pleasant months in Boise, while December and January are the least comfortable months.

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.

Average Monthly High / Low (°F)
MonthPortland, MEBoise City, ID
January31° / 11°38° / 24°
February34° / 14°46° / 27°
March42° / 23°56° / 33°
April54° / 33°64° / 38°
May64° / 43°73° / 45°
June73° / 53°82° / 52°
July79° / 58°92° / 58°
August78° / 57°90° / 56°
September70° / 49°80° / 48°
October59° / 37°66° / 39°
November48° / 29°49° / 31°
December37° / 18°38° / 23°
Hot, Freezing, Rainy, Snowy Days: Portland / Boise City
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 030 / 2411 / 108 / 4
February0 / 026 / 209 / 96 / 2
March0 / 026 / 1311 / 105 / 1
April0 / 013 / 711 / 91 / 0
May0 / 22 / 212 / 80 / 0
June1 / 70 / 012 / 50 / 0
July2 / 200 / 011 / 30 / 0
August1 / 170 / 09 / 20 / 0
September0 / 51 / 19 / 40 / 0
October0 / 09 / 610 / 60 / 0
November0 / 020 / 1611 / 111 / 2
December0 / 028 / 2611 / 116 / 4
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.

July is the hottest month for Boise with an average high temperature of 91.6°, which ranks it as one of the hottest places in Idaho. In Boise, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boise are September, June and May.
January has the coldest nighttime temperatures for Portland with an average of 10.8°. This is warmer than most places in Maine.

December has the coldest nighttime temperatures for Boise with an average of 22.7°. This is warmer than most 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 Boise, there are 51.0 days annually when the high temperature is over 90°, which is one of the hottest 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 Boise, there are 114.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest 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.

In Boise, there are 2.8 days annually when the nighttime low temperature falls below zero°, which is warmer 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.


December is the wettest month in Boise with 1.9 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 35% of yearly precipitation and 10% occurs in Autumn, which is the driest season. The annual rainfall of 13.0 inches in Boise means that it is about average compared to other places in Idaho.

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.

December is the rainiest month in Boise with 11.3 days of rain, and August is the driest month with only 2.3 rainy days. There are 87.0 rainy days annually in Boise, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 12% chance of a rainy day.

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

An annual snowfall of 17.5 inches in Boise means that it is less snowy than most places in Idaho.
January is the snowiest month in Portland with 18.1 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Boise with 6.4 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 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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Reviews for Boise City    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 Boise City

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Zips In Portland, Maine
04103, 04102, 04101, 04108, 04109, 04019
Zips In BOISE CITY, IDAHO
83709, 83704, 83706, 83713, 83705, 83702, 83716, 83703, 83712
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