Long-range Weather Forecast

Pacific Northwest

Annual Weather Summary
November 2007 to October 2008

Includes predictions for all or portions of California (Arcata, Eureka, Fortuna, McKinleyville, Yreka), Oregon (Beaverton, Eugene, Gresham, Portland, Salem), Washington (Bellevue, Everett, Seattle, Tacoma, Vancouver).

Pacific Northwest Long-range Weather Region

Winter will be one to two degrees above normal, on average, led by an especially mild February. The coldest periods will be in mid-December and early and mid-January. Rainfall will be below normal in Washington and above normal in Oregon and California. Snowfall will be below normal, with most of it occurring in January.

April and May rainfall will be above normal, especially in the south. Temperatures will be near or slightly above normal, on average.

Summer will be one to two degrees above normal, on average, with below-normal rainfall. The hottest temperatures will occur in early June, late July, and mid- to late August.

September and October will bring above-normal temperatures and above-normal rainfall, especially in the south.

Detailed Forecast for the Next Two Months

May 2008

Avg. Temperature: 56° (1° above avg.)
Precipitation: 3" (1" above avg.)
May. 1-5: Showers, cool
May. 6-14: Sunny, turning hot
May. 15-21: T-storms, then sunny, seasonable
May. 22-26: Sunny, warm
May. 27-31: Showers, cool
 

June 2008

Avg. Temperature: 61° (1° above avg.)
Precipitation: 1" (0.5" below avg.)
Jun. 1-10: Showers, then sunny, turning hot
Jun. 11-13: Sunny, warm
Jun. 14-24: Rainy periods, cool
Jun. 25-30: Scattered t-storms, seasonable

Temperature and Precipitation
November 2007 to October 2008

Temperature and Precipitation Graph
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