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2015 Long-Range Weather Forecast for Issaquah, Washington

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(Nov. 2014 - Oct. 2015)

Complete 2015 Long-Range Weather Forecast for the Pacific Northwest Region, November 2014 to October 2015 includes week-by-week details.

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Map showing long-range weather ragion

SEPTEMBER 2015: temperature 60° (1° below avg.); precipitation 1" (0.5" below avg.); Sep 1-8: Sunny, cool; Sep 9-14: Rainy periods, cool; Sep 15-18: Showers, then sunny, cool; Sep 19-26: Sunny, warm; Sep 27-30: Rainy periods, cool.

OCTOBER 2015: temperature 54.5° (0.5° above avg.); precipitation 3" (avg.); Oct 1-4: Showers, mild; Oct 5-9: Sunny, cool; Oct 10-17: Rainy, cool; Oct 18-27: Sunny, turning warm; Oct 28-31: Rainy, 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.

Temperature and Precipitation November 2014 to October 2015

Temperature and Precipitation Graph

See Long-Range Weather Forecasts for major cities in Washington.

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