Snow in Mount Vernon, Washington Winter storm alerts · 7-day snow forecast · average snowfall
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Mount Vernon averages 5.7 inches of snow a year. The snowiest month is December (3.7″), and snow usually falls from October through March. On about 2 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 4 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
October
0.1″
0
0
1
43°F
November
0.7″
<1
1
7
39°F
December
3.7″
1
1
10
35°F
January
0.6″
<1
2
12
35°F
February
0.2″
<1
0
10
35°F
March
0.4″
<1
<1
5
38°F
April
0″
0
0
1
41°F
Year
5.7″
2
4
46
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Sedro-Woolley (7 mi from the city center, -30 ft elevation difference); temperatures at Mt Vernon 3 Wnw. Averages smooth out big years: single winters can bring half or double the normal.
5.7 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Sedro-Woolley station, 7 miles away). The snowiest month is December with 3.7 inches.
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How many freezing nights does Mount Vernon have?
About 46 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, February, averages a low of 35 °F.