Spokane Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Spokane, Washington has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Spokane 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 Spokane 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 at the Spokane International Airport.
How Often it Snows in Spokane
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 in Spokane varies from year to year.
In December, for instance, one in four years totals over 17.8 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 15.8 inches, while the lightest years get less than 7.2 inches.
New snow for February ranges from over 10.2 inches in heavy snowfall years to under 1.6 inches in light years.
When Spokane Has Its First & Last Snowfalls
The first snowfall of winter for Spokane usually arrives in November. Occasionally a dusting of fresh snow lands in October or even as early as September.
The season's last snowfall most often happens in March. In one out of four years, new snow lands in April. A little fresh snow in May is also not unheard of in here.
Spokane is normally free of snow every year from June to August.
How Many Snowstorms Spokane Gets
Just under half the days of snowfall in Spokane 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 once or twice annually. But major blizzards that dump ten inches or more in one day are rare events that happen about once a decade.
How Much Snow Normally Accumulates in Spokane
For nearly half of winter days, Spokane has at least an inch of snow on the ground. Snow mostly accumulates during January.
The snow in Spokane does build up to ten or more inches deep for five or six days a year on average, but it doesn't often top twenty inches.
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.