Hillsboro, OR has a mild climate with warm summers and mild winters. The average temperature in July, the hottest month of the year, is 75 degrees Fahrenheit while the average temperature in January, the coldest month, is 37 degrees Fahrenheit. Precipitation levels throughout the year are moderate and Hillsboro typically receives around 36 inches of rain annually. Snowfall is usually minimal as Hillsboro averages only 2 inches of snow per year.
Hillsboro, Oregon gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Hillsboro averages 3 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 Hillsboro. The US average is 205 sunny days.
Hillsboro gets some kind of precipitation, on average, 156 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 81 degrees
Winter Low: the January low is 37
Rain: averages 39 inches of rain a year
Snow: averages 3 inches of snow a year