Complete 2015 Long-Range Weather Forecast for the Pacific Northwest Region, November 2014 to October 2015 includes week-by-week details.
Free 2-Month Weather Forecast
DECEMBER 2014: temperature 46° (3° above); precipitation 8" (avg. north, 3" above south); Dec 1-3: Rainy, mild; Dec 4-6: Heavy rain, windy, mild; Dec 7-19: Rainy periods, mild; Dec 20-26: Sunny, cool; Dec 27-31: Snow, then sunny, cold.
JANUARY 2015: temperature 46° (3° above avg.); precipitation 11" (5" above avg.); Jan 1-4: Rainy, cool; Jan 5-7: Heavy rain, mild; Jan 8-13: Rainy periods, mild; Jan 14-19: Heavy rain, mild; Jan 20-22: Rain and snow showers, cold; Jan 23-31: Occasional rain, mild.
Annual Weather Summary: November 2014 to October 2015
Winter temperatures will be higher than normal, with below-normal snowfall. Precipitation will be below normal in Washington and Oregon and near normal in northern California. The coldest periods will be in late December, mid- to late January, and late February, with the snowiest periods in late December and mid- to late January.
April and May will be slightly drier than normal, with near-normal temperatures.
Summer will be drier than normal, with temperatures near normal in the north and above elsewhere. The hottest periods will occur in mid- and late June and early to mid-July.
September and October will be cooler and drier than normal.