Best time to go is June, July, August, or September when sunshine is plentiful with warm to hot days, mild nights and light winds.  Makes it nice for hitting the golf courses and aquatic center, or biking, jogging, or strolling along the River Walk. The Friday evening Farmers Market on Main Street during the late Spring and Summer is also a treat.

Weather during the Pendleton Roundup in September is usually warm and dry with temperatures in the mid 70s to lower 80s.

November, December, January can have fog and low clouds interspersed with vigorous storms coming off the Pacific.  On foggy days, take a short drive to the mountains and to enjoy sun and snow.

It rarely gets colder than 10 degrees in Pendleton.