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 1981 to 2010 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).

10-year snowfall averages at Spokane, 2010 to 2019
Days   Inches Centi­metres
2.2 January 8.6 21.8
3.5 February 11.1 28.2
0.9 March 3.1 7.9
0.2 April 0.4 1.1
0.0 May 0.0 0.0
0.2 September 0.3 0.8
0.1 October 0.4 0.9
2.0 November 5.7 14.6
4.7 December 12.9 32.6
13.8 Year 42.5 108.0
30-year snowfall averages at Spokane, 1981 to 2010
Days   Inches Centi­metres
9.0 January 11.4 29.0
5.0 February 6.8 17.3
3.9 March 3.5 8.9
1.1 April 1.0 2.5
0.4 May 0.1 0.3
0.0 September 0.0 0.0
0.3 October 0.1 0.3
4.9 November 7.4 18.8
9.8 December 14.6 37.1
34.4 Year 44.9 114.0

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 18.7 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 15.8 inches, while the lightest years get less than 8.2 inches.

New snow for February ranges from over 9.5 inches in heavy snowfall years to under 1.5 inches in light years.

When Spokane Has Its First & Last Snowfalls

The first snowfall of winter for Spokane usually arrives in November. Occasionally October also gets a dusting of fresh snow.

The season's last snowfall most often happens in March. In one out of four years, an inch or more of new snow lands in April. A little fresh snow in May is also not unheard of in Spokane.

Spokane is normally free of snow every year from June to September.

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 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 once annually. But major blizzards that dump ten inches or more in one day are rare events that happen about once a decade.

Number of days per month and year on average in Spokane 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
4.3 1.1 January 0.3 0.0
2.5 0.6 February 0.1 0.0
1.2 0.3 March 0.0 0.0
0.4 0.1 April 0.0 0.0
2.5 0.7 November 0.3 0.0
4.7 1.4 December 0.5 0.1
15.6 4.2 Year 1.2 0.1

How Much Snow Normally Accumulates in Spokane

For about half of winter days, Spokane has at least an inch of snow on the ground.

Snow mostly accumulates during December and January. Typically, on four days in January and another one or two in December and in February, the snow covering Spokane gets to ten or more inches deep.

Average total days per month and year in Spokane 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
16.5 12.3 January 8.5 4.1
10.1 6.3 February 4.5 1.5
2.8 1.5 March 0.8 0.0
0.1 0.0 April 0.0 0.0
4.8 2.8 November 1.5 0.4
17.2 11.0 December 6.8 1.7
51.5 33.9 Year 22.1 7.7
References

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. 1981-2010 U.S. Climate Normals. (Data Access. FTP.)

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