2025 Compare Climate & Weather:
Belfast, ME vs Chatham, NY

Highlights

On average, there are 180 sunny days per year in Chatham. Belfast averages 201 sunny days per year. The US average is 205 sunny days.

Chatham, New York gets 42.9 inches of rain, on average, per year. Belfast, Maine gets 47.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chatham averages 49.7 inches of snow per year. Belfast averages 62.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Chatham, New York
Summer High: the July high is around 82.7 degrees
Winter Low: the January low is 13.8
Rain: averages 42.9 inches of rain a year
Snow: averages 49.7 inches of snow a year

Belfast, Maine
Summer High: the July high is around 77.1 degrees
Winter Low: the January low is 9.1
Rain: averages 47.8 inches of rain a year
Snow: averages 62.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Chatham is 6.8 (10=best), which means it is about average compared to other places in New York.

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

Today's Weather - Belfast, ME

46°F

Today's Weather - Chatham, NY

73°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Belfast / Chatham

July is the hottest month for Belfast with an average high temperature of 77.1°, which ranks it as cooler than most places in Maine. In Belfast, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Belfast are July, August and June.

July is the hottest month for Chatham with an average high temperature of 82.7°, which ranks it as warmer than most places in New York. In Chatham, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chatham are June, August and July.

January has the coldest nighttime temperatures for Belfast with an average of 9.1°. This is about average compared to other places in Maine.

January has the coldest nighttime temperatures for Chatham with an average of 13.8°. This is colder than most places in New York.

In Belfast, there are 1.9 days annually when the high temperature is over 90°, which is one of the coolest places in Maine.

In Chatham, there are 8.7 days annually when the high temperature is over 90°, which is hotter than most places in New York.

In Belfast, there are 155.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maine.

In Chatham, there are 140.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in New York.

In Belfast, there are 15.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maine.

In Chatham, there are 9.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in New York.

November is the wettest month in Belfast with 5.0 inches of rain, and the driest month is February with 3.1 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 47.8 inches in Belfast means that it is about average compared to other places in Maine.


June is the wettest month in Chatham with 4.3 inches of rain, and the driest month is February with 2.3 inches. The wettest season is Autumn with 29% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Chatham means that it is drier than most places in New York.

May is the rainiest month in Belfast with 10.9 days of rain, and February is the driest month with only 7.5 rainy days. There are 111.1 rainy days annually in Belfast, which is one of the least rainy places in Maine. The rainiest season is Summer 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 Chatham with 12.9 days of rain, and February is the driest month with only 8.7 rainy days. There are 127.4 rainy days annually in Chatham, which is about average compared to other places in New York. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 62.8 inches in Belfast means that it is less snowy than most places in Maine.

An annual snowfall of 49.7 inches in Chatham means that it is about average compared to other places in New York.

January is the snowiest month in Belfast with 18.0 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Chatham with 14.7 inches of snow, and 6 months of the year have significant snowfall.