Summer produces pleasantly mild temperatures and very little precipitation. Fall and spring are transitional in nature. At all times, marine air is a frequent moderating influence. In winter this brings the coldest weather. In summer, hot, dry continental air brings the highest temperatures.
Heavy downpours are infrequent but gentle rains and drizzle occur frequently during winter months.
Because of the temperate climate, Oregon's rainy season rarely interferes with planned outdoor sporting activities.