Jasper Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Jasper, Alberta has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Jasper usually gets. There are also monthly and yearly counts of the days that Jasper normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when the mountain resort town can expect its first and last snowfalls of the season.
All the numbers are long-term historical averages based on weather data gathered from 1981 to 2010 at the Jasper townsite.
How Often it Snows in Jasper
This first table lists monthly and yearly totals for amount of snow and how many days it snows at least 0.2 centimetres (0.08 inches).
When Jasper Has Its First & Last Snowfalls
The first snowfall of autumn for Jasper usually arrives in October, but it can snow as early as September or even August.
The season's last snowfall typically happens in April, although snow has been known to land in May or June.
Only in July can Jasper expect to not see any fresh flakes fall.
How Many Snowstorms Jasper Gets
Most days of snowfall in Jasper leave less than five centimetres (2 inches) of fresh snow on the ground. For six days a year on average, the amount of new snow totals at least five cm.
Big snowstorms of over ten cm a day normally occur twice a year. But major blizzards that dump 25 cm or more in one day are rare events that don't happen every year. Storms this severe are most likely to appear in October or November.
How Much Snow Normally Accumulates in Jasper
For about 15 days, or one-third of the year, Jasper has at least a centimetre of snow on the ground. In mid-winter the snowpack averages 23 cm deep.
Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.