Snow in Lake Oswego, Oregon Winter storm alerts · 7-day snow forecast · average snowfall
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Lake Oswego averages 3.6 inches of snow a year. The snowiest month is February (1.4″), and snow usually falls from December through February. On about 1 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 2 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
October
0″
0
0
1
47°F
November
0″
0
0
4
41°F
December
0.9″
<1
<1
8
36°F
January
1.3″
<1
1
8
37°F
February
1.4″
<1
1
6
38°F
March
0″
0
0
3
40°F
April
0″
0
0
1
43°F
Year
3.6″
1
2
30
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Portland Kgw-Tv (7 mi from the city center, -39 ft elevation difference); temperatures at Oregon City. Averages smooth out big years: single winters can bring half or double the normal.
3.6 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Portland Kgw-Tv station, 7 miles away). The snowiest month is February with 1.4 inches.
Is there a winter storm warning for Lake Oswego today?
This page checks the National Weather Service for active alerts at Lake Oswego's location every time you open it; the box at the top lists any winter storm, winter weather, cold or freeze alert in effect right now.
How many freezing nights does Lake Oswego have?
About 30 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, December, averages a low of 36 °F.