Snow in Walla Walla, Washington Winter storm alerts · 7-day snow forecast · average snowfall
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Walla Walla averages 6.5 inches of snow a year. The snowiest month is December (2.7″), and snow usually falls from October through March. On about 4 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 9 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
October
0.1″
<1
0
2
44°F
November
0.3″
<1
1
10
36°F
December
2.7″
1
3
20
30°F
January
1.0″
1
3
17
31°F
February
2.2″
1
2
13
33°F
March
0.2″
<1
<1
6
38°F
April
0″
0
0
1
43°F
Year
6.5″
4
9
70
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Walla Walla Rgnl Airport (3 mi from the city center, +223 ft elevation difference). Averages smooth out big years: single winters can bring half or double the normal.
6.5 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Walla Walla Rgnl Airport station, 3 miles away). The snowiest month is December with 2.7 inches.
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How many freezing nights does Walla Walla have?
About 70 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, December, averages a low of 30 °F.