Page 501 - 2018_IRC

ENERGY EFFICIENCY

TABLE N1101.7 (R301.1)—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM-HUMID
DESIGNATIONS BY STATE, COUNTY AND TERRITORY
6A Ozaukee 7 T a y l o r 6B Big Horn 6B Sheridan NORTHERN
6A Pepin 6A Trempealeau 6B Campbell 7 Sublette MARIANA
6A Pierce 6A Vernon 6B Carbon 6B Sweetwater ISLANDS
6A Polk 7 Vilas 6B Converse 7 T e t o n 1A (all)*
6A Portage 6A Walworth 6B Crook 6B Uinta
7 P r i c e 7 Washburn 6B Fremont 6B Washakie PUERTO RICO
6A Racine 6A Washington 5B Goshen 6B Weston 1A (all)*
6A Richland 6A Waukesha 6B Hot Springs US TERRITORIES VIRGIN ISLANDS
6A Rock 6A Waupaca 6B Johnson
6A Rusk 6A Waushara 6B Laramie AMERICAN 1A (all)*
6A Sauk 6A Winnebago 7 Lincoln SAMOA
7 S a w y e r 6A Wood 6B Natrona 1A (all)*
6A Shawano WYOMING 6B Niobrara
6A Sheboygan 6B Park GUAM
6A St. Croix 6B Albany 5B Platte 1A (all)*

TABLE N1101.7.2(1) [R302.3(1)]
INTERNATIONAL CLIMATE ZONE DEFINITIONS
MAJOR CLIMATE-TYPE DEFINITIONS
Marine (C) Definition—Locations meeting all four criteria:
1. Mean temperature of coldest month between -3°C (27°F) and 18°C (65°F).
2. Warmest month mean < 22°C (72°F).
3. Not fewer than four months with mean temperatures over 10°C (50°F).
4. Dry season in summer. The month with the heaviest precipitation in the cold season has not less than three times as much precipitation
as the month with the least precipitation in the rest of the year. The cold season is October through March in the Northern Hemisphere
and April through September in the Southern Hemisphere.
Dry (B) Definition—Locations meeting the following criteria:
Not marine and P < 0.44 × (TF - 19.5) [P < 2.0 × (TC + 7) in SI units]
cm
in
where:
P = Annual precipitation in inches (cm)
in
T = Annual mean temperature in °F (°C)
Moist (A) Definition—Locations that are not marine and not dry.
Warm-humid Definition—Moist (A) locations where either of the following wet-bulb temperature conditions shall occur during the warmest
six consecutive months of the year:
1. 67°F (19.4°C) or higher for 3,000 or more hours.
2. 73°F (22.8°C) or higher for 1,500 or more hours.
For SI: °C = [(°F)-32]/1.8, 1 inch = 2.54 cm.

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