2025 Compare Climate & Weather:
Sag Harbor, NY vs Mercer, PA

Highlights

On average, there are 158 sunny days per year in Mercer. Sag Harbor averages 206 sunny days per year. The US average is 205 sunny days.

Mercer, Pennsylvania gets 42.3 inches of rain, on average, per year. Sag Harbor, New York gets 48.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Mercer averages 44.5 inches of snow per year. Sag Harbor averages 26.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Mercer, Pennsylvania
Summer High: the July high is around 82.2 degrees
Winter Low: the January low is 16.5
Rain: averages 42.3 inches of rain a year
Snow: averages 44.5 inches of snow a year

Sag Harbor, New York
Summer High: the July high is around 80.6 degrees
Winter Low: the January low is 22.6
Rain: averages 48.2 inches of rain a year
Snow: averages 26.3 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Mercer borough is 6.7 (10=best), which means it is less comfortable than most places in Pennsylvania.

The annual BestPlaces Comfort Index for Sag Harbor is 7.2 (10=best), which means it is more comfortable than most places in New York.

Today's Weather - Sag Harbor, NY

57°F

Today's Weather - Mercer, PA

52°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sag Harbor / Mercer

July is the hottest month for Sag Harbor with an average high temperature of 80.6°, which ranks it as cooler than most places in New York. In Sag Harbor, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sag Harbor are August, July and June.

July is the hottest month for Mercer borough with an average high temperature of 82.2°, which ranks it as cooler than most places in Pennsylvania. In Mercer borough, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mercer borough are June, August and September.

January has the coldest nighttime temperatures for Sag Harbor with an average of 22.6°. This is warmer than most places in New York.

January has the coldest nighttime temperatures for Mercer borough with an average of 16.5°. This is colder than most places in Pennsylvania.

In Sag Harbor, there are 2.8 days annually when the high temperature is over 90°, which is cooler than most places in New York.

In Mercer borough, there are 6.5 days annually when the high temperature is over 90°, which is cooler than most places in Pennsylvania.

In Sag Harbor, there are 106.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in New York.

In Mercer borough, there are 143.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Pennsylvania.

In Sag Harbor, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in New York.

In Mercer borough, there are 7.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Pennsylvania.

March is the wettest month in Sag Harbor with 4.7 inches of rain, and the driest month is July with 3.4 inches. The wettest season is Summer with 27% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 48.2 inches in Sag Harbor means that it is wetter than most places in New York.


June is the wettest month in Mercer borough with 4.5 inches of rain, and the driest month is February with 2.2 inches. The wettest season is Autumn with 30% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 42.3 inches in Mercer borough means that it is about average compared to other places in Pennsylvania.

May is the rainiest month in Sag Harbor with 11.0 days of rain, and August is the driest month with only 7.9 rainy days. There are 112.7 rainy days annually in Sag Harbor, which is less rainy than most places in New York. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 23% chance of a rainy day.

January is the rainiest month in Mercer borough with 15.3 days of rain, and August is the driest month with only 10.3 rainy days. There are 155.7 rainy days annually in Mercer borough, which is rainier than most places in Pennsylvania. The rainiest season is Spring when it rains 28% of the time and the driest is Autumn with only a 22% chance of a rainy day.

An annual snowfall of 26.3 inches in Sag Harbor means that it is less snowy than most places in New York.

An annual snowfall of 44.5 inches in Mercer borough means that it is snowier than most places in Pennsylvania.

February is the snowiest month in Sag Harbor with 8.2 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Mercer borough with 12.6 inches of snow, and 6 months of the year have significant snowfall.