2025 Compare Climate & Weather:
Phoenix, AZ vs Portland, OR

Highlights

On average, there are 144 sunny days per year in Portland. Phoenix averages 299 sunny days per year. The US average is 205 sunny days.

Portland, Oregon gets 42.8 inches of rain, on average, per year. Phoenix, Arizona gets 9.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Portland averages 2.6 inches of snow per year. Phoenix averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Portland, Oregon
Summer High: the July high is around 80.5 degrees
Winter Low: the January low is 36.4
Rain: averages 42.8 inches of rain a year
Snow: averages 2.6 inches of snow a year

Phoenix, Arizona
Summer High: the July high is around 104.5 degrees
Winter Low: the January low is 43.2
Rain: averages 9.2 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Portland is 7.5 (10=best), which means it is more comfortable than most places in Oregon.

The annual BestPlaces Comfort Index for Phoenix is 7.3 (10=best), which means it is less comfortable than most places in Arizona.

Today's Weather - Phoenix, AZ

87°F

Today's Weather - Portland, OR

62°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Phoenix / Portland

July is the hottest month for Phoenix with an average high temperature of 104.5°, which ranks it as warmer than most places in Arizona. In Phoenix, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Phoenix are March, November and April.

August is the hottest month for Portland with an average high temperature of 81.1°, which ranks it as cooler than most places in Oregon. 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 September, July and August.

December has the coldest nighttime temperatures for Phoenix with an average of 42.2°. This is one of the warmest places in Arizona.

December has the coldest nighttime temperatures for Portland with an average of 35.6°. This is warmer than most places in Oregon.

In Phoenix, there are 163.2 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

In Portland, there are 11.6 days annually when the high temperature is over 90°, which is cooler than most places in Oregon.

In Phoenix, there are 3.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

In Portland, there are 29.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

In Phoenix, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Arizona.

In Portland, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Oregon.

August is the wettest month in Phoenix with 1.1 inches of rain, and the driest month is June with 0.0 inches. The wettest season is Spring with 35% of yearly precipitation and 16% occurs in Summer, which is the driest season. The annual rainfall of 9.2 inches in Phoenix means that it is drier than most places in Arizona.


December is the wettest month in Portland with 6.8 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 41% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 42.8 inches in Portland means that it is about average compared to other places in Oregon.

August is the rainiest month in Phoenix with 4.0 days of rain, and June is the driest month with only 0.4 rainy days. There are 33.1 rainy days annually in Phoenix, which is less rainy than most places in Arizona. The rainiest season is Spring when it rains 34% of the time and the driest is Summer with only a 20% chance of a rainy day.

November is the rainiest month in Portland with 19.3 days of rain, and August is the driest month with only 3.7 rainy days. There are 155.9 rainy days annually in Portland, which is rainier than most places in Oregon. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 11% chance of a rainy day.

There is rarely any recorded snowfall in Phoenix, ranking it as one of the least snowy places in Arizona.

An annual snowfall of 2.6 inches in Portland means that it is less snowy than most places in Oregon.

Any measurable snowfall is a rare occurance in Phoenix.

December is the snowiest month in Portland with 0.9 inches of snow, and 3 months of the year have significant snowfall.