2025 Compare Climate & Weather:
Jackson, ME vs Portland, ME

Highlights

On average, there are 203 sunny days per year in Portland. Jackson averages 199 sunny days per year. The US average is 205 sunny days.

Portland, Maine gets 48.9 inches of rain, on average, per year. Jackson, Maine gets 48.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Portland averages 61 inches of snow per year. Jackson averages 69.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Jackson, Maine
Summer High: the July high is around 77.2 degrees
Winter Low: the January low is 7.3
Rain: averages 48.9 inches of rain a year
Snow: averages 69.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Portland is 6.5 (10=best), which means it is more comfortable than most places in Maine.

The annual BestPlaces Comfort Index for Jackson is 6.4 (10=best), which means it is about average compared to other places in Maine.

Today's Weather - Jackson, ME

37°F

Today's Weather - Portland, ME

40°F

Average Monthly High / Low (°F)

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

July is the hottest month for Jackson with an average high temperature of 77.2°, which ranks it as cooler than most places in Maine. In Jackson, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jackson are July, August and June.

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.

January has the coldest nighttime temperatures for Jackson with an average of 7.3°. This is colder than most places in Maine.

January has the coldest nighttime temperatures for Portland with an average of 10.8°. This is warmer than most places in Maine.

In Jackson, there are 1.7 days annually when the high temperature is over 90°, which is one of the coolest places in Maine.

In Portland, there are 3.8 days annually when the high temperature is over 90°, which is hotter than most places in Maine.

In Jackson, there are 160.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maine.

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 Jackson, there are 20.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Maine.

In Portland, there are 12.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maine.

November is the wettest month in Jackson with 5.2 inches of rain, and the driest month is February with 3.2 inches. The wettest season is Winter with 29% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 48.9 inches in Jackson means that it is about average compared to other places in Maine.


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.

May is the rainiest month in Jackson with 11.2 days of rain, and February is the driest month with only 7.9 rainy days. There are 117.1 rainy days annually in Jackson, which is one of the least rainy places in Maine. The rainiest season is Autumn when it rains 26% of the time and the driest is Spring with only a 23% chance of a rainy day.

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.

An annual snowfall of 69.5 inches in Jackson means that it is about average compared to other places in Maine.

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

January is the snowiest month in Jackson with 18.3 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Portland with 18.1 inches of snow, and 6 months of the year have significant snowfall.