2025 Compare Climate & Weather:
Portland, OR vs Monmouth Junction, NJ

Highlights

On average, there are 210 sunny days per year in Monmouth Junction. Portland averages 144 sunny days per year. The US average is 205 sunny days.

Monmouth Junction, New Jersey gets 48.3 inches of rain, on average, per year. Portland, Oregon gets 42.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Monmouth Junction averages 23.2 inches of snow per year. Portland averages 2.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Monmouth Junction, New Jersey
Summer High: the July high is around 86 degrees
Winter Low: the January low is 22.3
Rain: averages 48.3 inches of rain a year
Snow: averages 23.2 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Monmouth Junction is 7.2 (10=best), which means it is about average compared to other places in New Jersey.

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

Today's Weather - Portland, OR

53°F

Today's Weather - Monmouth Junction, NJ

60°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Portland / Monmouth Junction

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.

July is the hottest month for Monmouth Junction with an average high temperature of 86.0°, which ranks it as warmer than most places in New Jersey. In Monmouth Junction, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Monmouth Junction are September, June and May.

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

January has the coldest nighttime temperatures for Monmouth Junction with an average of 22.3°. This is about average compared to other places in New Jersey.

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

In Monmouth Junction, there are 20.2 days annually when the high temperature is over 90°, which is hotter than most places in New Jersey.

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 Monmouth Junction, there are 106.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in New Jersey.

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.

In Monmouth Junction, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in New Jersey.

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.


July is the wettest month in Monmouth Junction with 5.2 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 48.3 inches in Monmouth Junction means that it is wetter than most places in New Jersey.

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.

May is the rainiest month in Monmouth Junction with 12.1 days of rain, and September is the driest month with only 8.5 rainy days. There are 120.1 rainy days annually in Monmouth Junction, which is rainier than most places in New Jersey. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

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

An annual snowfall of 23.2 inches in Monmouth Junction means that it is about average compared to other places in New Jersey.

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

February is the snowiest month in Monmouth Junction with 7.8 inches of snow, and 5 months of the year have significant snowfall.