Historical Weather Records & Monthly Climate for Lake Oswego, OR

All-Time High
118°F
All-Time Low
-9°F
Max Daily Snow
5"
Max Daily Rain
2.4"
Max Snow Depth
5"

Monthly Climate Averages for Lake Oswego, OR

Based on 30 years of historical data (1994 - 2023)

MonthHigh (°F)Low (°F)Precip (in)Snow (in)
January47°36°6.92"1.94"
February49°35°5.33"2.68"
March54°38°5.72"1"
April58°41°4.51"0.77"
May66°47°2.97"0
June72°52°1.95"0
July82°57°0.39"0
August82°58°0.59"0
September75°54°2"0
October62°46°4.49"0
November52°40°7.17"0.45"
December46°35°8.1"2.52"

Historical Weather Extremes for Lake Oswego, OR

Based on 80+ years of archive data (1940 - 2024)

🔥
Longest Heatwave
13 Days
2021
Consecutive days ≥ 90°F
🧊
Deepest Freeze
10 Days
1972
Consecutive days ≤ 32°F
🏜️
Longest Drought
52 Days
1985
Consecutive days w/o rain
Wettest Month
9.56"
December 2021
Most rainfall in one month
Snowiest Month
6.3"
February 2021
Most snowfall in one month

More Historical Climate Data for Cities in


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