2025 Compare Climate & Weather:
Hamilton, OH vs Portland, OR

Highlights

On average, there are 144 sunny days per year in Portland. Hamilton averages 177 sunny days per year. The US average is 205 sunny days.

Portland, Oregon gets 42.8 inches of rain, on average, per year. Hamilton, Ohio gets 42.9 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. Hamilton averages 13.2 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

Hamilton, Ohio
Summer High: the July high is around 86.6 degrees
Winter Low: the January low is 21
Rain: averages 42.9 inches of rain a year
Snow: averages 13.2 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 Hamilton is 7.2 (10=best), which means it is one of the most pleasant places in Ohio.

Today's Weather - Hamilton, OH

62°F

Today's Weather - Portland, OR

80°F

Average Monthly High / Low (°F)

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

July is the hottest month for Hamilton with an average high temperature of 86.6°, which ranks it as one of the hottest places in Ohio. In Hamilton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hamilton are September, May and June.

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.

January has the coldest nighttime temperatures for Hamilton with an average of 21.0°. This is warmer than most places in Ohio.

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

In Hamilton, there are 22.7 days annually when the high temperature is over 90°, which is one of the hottest places in Ohio.

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

In Hamilton, there are 113.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Ohio.

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 Hamilton, there are 3.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Ohio.

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.

May is the wettest month in Hamilton with 5.2 inches of rain, and the driest month is February with 2.6 inches. The wettest season is Summer with 30% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Hamilton means that it is wetter than most places in Ohio.


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.

May is the rainiest month in Hamilton with 12.0 days of rain, and September is the driest month with only 6.8 rainy days. There are 111.8 rainy days annually in Hamilton, which is one of the least rainy places in Ohio. The rainiest season is Summer when it rains 30% of the time and the driest is Winter with only a 21% 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.

An annual snowfall of 13.2 inches in Hamilton means that it is one of the least snowy places in Ohio.

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

January is the snowiest month in Hamilton with 4.4 inches of snow, and 4 months of the year have significant snowfall.

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