Marion Weather Today

Marion County is located in the U.S. state of Oregon and is home to the state capital, Salem. It is located in the Willamette Valley and is bordered by the Cascade Mountains to the east, the Pacific Ocean to the west, and the Santiam River to the south. The climate in Marion County is generally mild with warm summers and cool winters. Average temperatures range from 38°F in January to 75°F in July. Precipitation occurs throughout the year, with an average of 43 inches per year. The climate is generally dry most of the year, with an average of only 12 inches of rain per year.