Blue Hill Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Great Blue Hill, Massachusetts has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Blue Hill usually gets. There are also monthly and yearly counts of the days that the summit normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when Blue Hill can expect the first and last snowfalls of the season.
The first set of monthly snow totals are averages for 2010 to 2019. All the other numbers are long-term historical averages based on weather data gathered from 1991 to 2020 on the summit of Great Blue Hill at the Blue Hill Meteorological Observatory. It is located a few miles south of Boston near the Blue Hill Ski Area.
How Often it Snows on Blue Hill
The next two tables list monthly and yearly totals for amount of snow and how many days it snows at least 0.1 inches (0.25 centimetres).
These averages don't show how much the snowfall at Blue Hill varies from year to year.
In December, for instance, one in four years totals over 22.1 inches of snow. Another 25 percent of years receive less than 2.7 inches for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 24.9 inches, while the lightest years get less than 7.1 inches.
New snow for February ranges from 27 inches or more in heavy snowfall years to under 10.2 inches in light years.
When Blue Hill Has Its First & Last Snowfalls
The first snowfall of winter for Blue Hill usually arrives in November. But depending on the year, snowflakes start flying anytime from October to December.
The season's last snowfall most often happens in April. Every few years though, it stops snowing in March.
Great Blue Hill is normally free of snow every year from May to September.
How Many Snowstorms Blue Hill Gets
For 15 days a year on average, the amount of new snow at Blue Hill totals at least an inch.
Snowstorms of over five inches a day normally occur 4 times annually. Major blizzards that dump ten inches or more in one day typically happen once or twice a year.
How Much Snow Normally Accumulates in Blue Hill
For about half of winter, Blue Hill has at least an inch of snow on the ground.
Snow mostly accumulates during February. Typically for 15 days a year the snow covering Blue Hill gets to ten or more inches deep. On four or five of those days the snowpack builds up to 20 inches or more.
Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.
NOAA National Centers for Environmental Information (NCEI). Climate Normals.