2025 Compare Climate & Weather:
Boston, MA vs Lake Oswego, OR

Highlights

On average, there are 141 sunny days per year in Lake Oswego. Boston averages 200 sunny days per year. The US average is 205 sunny days.

Lake Oswego, Oregon gets 42 inches of rain, on average, per year. Boston, Massachusetts gets 47.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Lake Oswego averages 1.5 inches of snow per year. Boston averages 48.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Lake Oswego, Oregon
Summer High: the July high is around 81.4 degrees
Winter Low: the January low is 36.6
Rain: averages 42 inches of rain a year
Snow: averages 1.5 inches of snow a year

Boston, Massachusetts
Summer High: the July high is around 82.4 degrees
Winter Low: the January low is 19.2
Rain: averages 47.4 inches of rain a year
Snow: averages 48.1 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Lake Oswego is 7.6 (10=best), which means it is one of the most pleasant places in Oregon.

The annual BestPlaces Comfort Index for Boston is 6.9 (10=best), which means it is about average compared to other places in Massachusetts.

Today's Weather - Boston, MA

68°F

Today's Weather - Lake Oswego, OR

70°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boston / Lake Oswego

July is the hottest month for Boston with an average high temperature of 82.4°, which ranks it as warmer than most places in Massachusetts. In Boston, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boston are June, August and July.

August is the hottest month for Lake Oswego with an average high temperature of 82.0°, which ranks it as about average compared to other places in Oregon. In Lake Oswego, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lake Oswego are September, June and July.

January has the coldest nighttime temperatures for Boston with an average of 19.2°. This is about average compared to other places in Massachusetts.

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

In Boston, there are 11.3 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.

In Lake Oswego, there are 14.3 days annually when the high temperature is over 90°, which is about average compared to other places in Oregon.

In Boston, there are 116.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Massachusetts.

In Lake Oswego, there are 28.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

In Boston, there are 1.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Massachusetts.

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

March is the wettest month in Boston with 4.6 inches of rain, and the driest month is February with 3.5 inches. The wettest season is Summer with 26% of yearly precipitation and 24% occurs in Spring, which is the driest season. The annual rainfall of 47.4 inches in Boston means that it is drier than most places in Massachusetts.


December is the wettest month in Lake Oswego with 6.8 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 42% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 42.0 inches in Lake Oswego means that it is about average compared to other places in Oregon.

May is the rainiest month in Boston with 12.4 days of rain, and September is the driest month with only 8.9 rainy days. There are 130.0 rainy days annually in Boston, which is rainier than most places in Massachusetts. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

November is the rainiest month in Lake Oswego with 18.7 days of rain, and August is the driest month with only 3.4 rainy days. There are 147.3 rainy days annually in Lake Oswego, which is about average compared to other places in Oregon. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 11% chance of a rainy day.

An annual snowfall of 48.1 inches in Boston means that it is snowier than most places in Massachusetts.

An annual snowfall of 1.5 inches in Lake Oswego means that it is less snowy than most places in Oregon.

January is the snowiest month in Boston with 14.2 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Lake Oswego with 0.5 inches of snow, and 2 months of the year have significant snowfall.