I'm in Western Washington State.  USDA Zone 7b. 5-10 degrees for  lows, 90+ for summer high temps. We always have a few days in summer around 100, a few days below 0 with wind chill.

 My average winter time temps are 35-40 degrees. Wet climate.

 Looks like Sunset magazine has it's own ratings, but shows average conditions for my location. I'm 3 hours from the Canadian border but close enough to the Pacific to have my temps moderated somewhat, except for occasional storms or Arctic flows

http://www.sunset.com/.../sunset-climate-zone-western... ZONE 4: Cold-winter areas of the north coast and mild-winter areas of Alaska and British Columbia

My bees usually have no more than a few weeks at a time for hive confinement periods during winter when they can't get out for cleansing flights of some sort.

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