WAC 51-11R-30100. Section R301—Climate zones

R301.1 General. Climate zones from Table R301.1 shall be used in determining the applicable requirements from Chapter 4. Locations not in Table R301.1 (outside the United States) shall be assigned a climate zone based on Section R301.3. R301.2 Warm humid counties. Warm humid counties are identified in Table R301.1 by an asterisk. R301.3 International climate zones. The climate zone for any location outside the United States shall be determined by applying Table R301.3(1) and then Table R301.3(2). TABLE R301.1 CLIMATE ZONES, MOISTURE REGIMES, AND WARM-HUMID DESIGNATIONS BY STATE AND COUNTY Key: A - Moist, B - Dry, C - Marine. Absence of moisture designation indicates moisture regime is irrelevant. Asterisk (*) indicates a warm-humid location. washington 5B Adams 4C Grays Harbor 4C Pierce 5B Asotin 4C Island 4C San Juan 5B Benton 4C Jefferson 4C Skagit 5B Chelan 4C King 5B Skamania 4C Clallam 4C Kitsap 4C Snohomish 4C Clark 5B Kittitas 5B Spokane 5B Columbia 5B Klickitat 5B Stevens 4C Cowlitz 4C Lewis 4C Thurston 5B Douglas 5B Lincoln 4C Wahkiakum 5B Ferry 4C Mason 5B Walla Walla 5B Franklin 5B Okanogan 4C Whatcom 5B Garfield 4C Pacific 5B Whitman 5B Grant 5B Pend Oreille 5B Yakima Key: A - Moist, B - Dry, C - Marine. Absence of moisture designation indicates moisture regime is irrelevant. Asterisk (*) indicates a warm-humid location. washington 5B Adams 4C Grays Harbor 4C Pierce 5B Asotin 4C Island 4C San Juan 5B Benton 4C Jefferson 4C Skagit 5B Chelan 4C King 5B Skamania 4C Clallam 4C Kitsap 4C Snohomish 4C Clark 5B Kittitas 5B Spokane 5B Columbia 5B Klickitat 5B Stevens 4C Cowlitz 4C Lewis 4C Thurston 5B Douglas 5B Lincoln 4C Wahkiakum 5B Ferry 4C Mason 5B Walla Walla 5B Franklin 5B Okanogan 4C Whatcom 5B Garfield 4C Pacific 5B Whitman 5B Grant 5B Pend Oreille 5B Yakima