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Lake Oswego, Oregon, gets 39 inches of rain per year. The US average is 37. Snowfall is 2 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 152.

On average, there are 141 sunny days per year in Lake Oswego, Oregon. The July high is around 79 degrees. The January low is 34. Our comfort index, which is based on humidity during the hot months, is a 64 out of 100, where higher is more comfortable. The US average on the comfort index is 44.

  CLIMATELake Oswego, OregonUnited States
  Rainfall (in.)  39.336.5
  Snowfall (in.)  2.125
  Precipitation Days  152100
  Sunny Days  141205
  Avg. July High  7986.5
  Avg. Jan. Low  33.820.5
  Comfort Index (higher=better)  6444
  UV Index  2.84.3
  Elevation ft.  2901,443

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