Juneau Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Juneau, Alaska has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Juneau usually gets. There are also monthly and yearly counts of the days that Juneau normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when Juneau 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 in downtown Juneau.
How Often it Snows in Juneau
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 in Juneau varies from year to year.
In December, for instance, one in four years totals over 19.3 inches of snow. Another 25 percent of years receive less than 5.6 inches for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 34.1 inches, while the lightest years get less than 4.7 inches.
New snow for February ranges from over 30.8 inches in heavy snowfall years to under 4.8 inches in light years.
When Juneau Has Its First & Last Snowfalls
The first snowfall of winter for Juneau usually arrives in November. In rare years, October also gets some snow.
The season's last snowfall typically happens in March. Every three or four years, it keeps snowing until April.
Juneau is normally free of snow every year from May to September.
How Many Snowstorms Juneau Gets
Most days of snowfall in Juneau amounting to at least an inch, of fresh snow on the ground. For 8 days a year on average, the amount of new snow totals at three or more inches.
Snowstorms of over five inches a day normally occur three or four times a year. But major blizzards that dump ten inches or more in one day are rare events that don't happen every year.
How Much Snow Normally Accumulates in Juneau
For about one-third of winter days, Juneau has at least an inch of snow on the ground.
Snow mostly accumulates during January and March. Typically, on four days in January and in March plus another three in February, the snow covering Juneau gets to ten or more inches deep.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.