Lake Oswego, OR has a pleasant climate year-round. In the summer months, temperatures tend to reach the upper 70s and low 80s with occasional days reaching into the 90s. Humidity levels are generally moderate during this time. Winters in Lake Oswego bring temperatures that range from the mid 30s to mid 40s during the day and drop into the 20s at night. Rainfall is abundant throughout the year with more rain falling in spring and winter months compared to summer months. Snowfall is rare but does occur occasionally in the area.
Lake Oswego (zip 97035), Oregon gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Lake Oswego (zip 97035) averages 2 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 142 sunny days per year in Lake Oswego (zip 97035). The US average is 205 sunny days.
Lake Oswego (zip 97035) gets some kind of precipitation, on average, 147 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 82 degrees
Winter Low: the January low is 37
Rain: averages 42 inches of rain a year
Snow: averages 2 inches of snow a year