This interactive map shows current weather conditions around northern California and southern Oregon. The region enjoys several very distinct climatic zones. Visitors can experience a wide range of temperatures - from the cool alpine areas around Mount Shasta to the high desert environments of the eastern volcanic flows.
Click on the map icons for extended forecast information.
Regional Weather Conditions
Alturas, CA - 30° F, Mostly Clear
Mostly clear, with a low around 17. East northeast wind 2 to 7 mph.
Corvallis, OR - 37° F, Mostly Cloudy then Light Rain Likely
Rain likely after 1am. Mostly cloudy. Low around 34, with temperatures rising to around 37 overnight. Southwest wind 1 to 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Dayville, OR - 31° F, Partly Cloudy then Slight Chance Light Snow
A slight chance of snow after 4am. Partly cloudy. Low around 26, with temperatures rising to around 30 overnight. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New snow accumulation of less than half an inch possible
Portland, OR - 41° F, Cloudy then Light Rain Likely
Rain likely after 1am. Cloudy, with a low around 35. Southeast wind 1 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
The Cascade Arc includes nearly 20 major volcanoes, among a total of over 4,000 separate volcanic vents including numerous stratovolcanoes, shield volcanoes, lava domes, and cinder cones. Volcanism in the arc began about 37 million years ago; however, most of the present-day Cascade volcanoes are less than 2,000,000 years old. Learn More