Portland Snowfall Totals & Accumulation Averages

Share |

This page pulls together information on when, how much and how often Portland, Maine has snow.

There are data and descriptions here of how many days it snows and the total amount of snowfall that Portland usually gets. There are also monthly and yearly counts of the days that the city normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when Portland can expect the first and last snowfalls of the season.

All the numbers are averages, based on weather data gathered from 1981 to 2010 at the Portland International Jetport.

How Often it Snows in Portland

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).

Average total snowfall and days with fresh snow in Portland
Days   Inches Centimetres
  7.9 January 19.2   48.8
  6.1 February 12.0   30.5
  5.1 March 12.7   32.3
  1.1 April   2.8     7.1
  1.5 November   1.9     4.8
  6.1 December 13.2   33.5
27.8 Year 61.8 157.0

These averages don't show how much the snowfall in Portland varies from year to year.

In December, for instance, one in four years totals over 18.7 inches of snow. Another 25 percent of years receive five inches or less for the month.

Similarly in January, fresh snowfall in the heaviest years amounts to over 20.3 inches, while the lightest years get less than 13.5 inches.

New snow for February ranges from over 16.7 inches in heavy snowfall years to under five inches in light years.

When Portland Has Its First & Last Snowfalls

The first snowfall of winter for Portland usually arrives in December. Every three or four years, November also gets snow.

The season's last snowfall typically happens in April. Every few years April has no snow, which moves the last snowfall to March.

Portland is normally free of snow every year from May to October.

How Many Snowstorms Portland Gets

Just under half the days of snowfall in Portland leave just a skiff, amounting to less than an inch, of fresh snow on the ground. For 16 days a year on average, the amount of new snow totals at least an inch.

Snowstorms of over five inches a day normally occur four times a year. But major blizzards that dump ten inches or more in one day don't happen each year.

Number of days per month and year on average in Portland with a total snowfall of at least 1, 3, 5 or 10 inches
1 inch
2.5 cm
3 inches
7.6 cm
  5 inches
12.7 cm
10 inches
25.4 cm
  4.8 2.2 January 1.4 0.2
  3.3 1.5 February 0.8 0.2
  3.1 1.6 March 0.8 0.1
  0.6 0.3 April 0.2 0.1
  0.7 0.1 November 0.1 0.0
  3.4 1.7 December 0.7 0.1
15.9 7.4 Year 4.0 0.7

How Much Snow Normally Accumulates in Portland

A little more than half of winter days in Portland have at least an inch of snow on the ground.

Snow mostly accumulates during January and February. Typically, on seven days in January and in February, plus another five or six days in March, the snow covering Portland gets to ten or more inches deep.

Average total days per month and year in Portland with snow depth of at least 1, 3, 5 or 10 inches on the ground
1 inch
2.5 cm
3 inches
7.6 cm
  5 inches
12.7 cm
10 inches
25.4 cm
22.2 17.2 January 13.8   7.3
19.9 16.7 February 13.2   7.3
13.7 10.9 March   8.5   5.5
  1.4   0.9 April   0.5   0.1
  1.4   0.5 November   0.2   0.0
11.3   7.7 December   4.9   1.3
69.9 53.9 Year 41.1 21.5
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Share |

Average Weather

Maine Snowfall

AMERICAN WEATHER

Major USA Cities

States

Extreme USA Weather