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.
All the numbers are long-term historical averages based on weather data gathered from 1981 to 2010 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
This first table lists 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 21.7 inches of snow. Another 25 percent of years receive less than 6.5 inches for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 19.7 inches, while the lightest years get less than 11.3 inches.
New snow for February ranges from 17 inches or more in heavy snowfall years to under 7.7 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
Half the days of snowfall on Blue Hill leave just a skiff, amounting to less than an inch, of fresh snow on the ground. For 15 days a year on average, the amount of new snow 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 happen just once 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 January and February. Typically, on 3 or 4 days in January and in February, the snow covering Blue Hill gets to ten or more inches deep.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.