New Mexico climate zones
New Mexico’s 33 counties fall in 3 IECC 2021 climate zones: 3B (8), 4B (13), 5B (12).
Zone 3B: warm-dry
Attic target R49 (ENERGY STAR)Chaves County (Hot-dry) · Doña Ana County (Hot-dry) · Eddy County (Hot-dry) · Hidalgo County (Hot-dry) · Lea County (Hot-dry) · Luna County (Hot-dry) · Otero County (Hot-dry) · Sierra County (Hot-dry)
Zone 4B: mixed-dry
Attic target R60 (ENERGY STAR)Bernalillo County (Mixed-dry) · Catron County (Mixed-dry) · Cibola County (Cold) · Curry County (Mixed-dry) · De Baca County (Mixed-dry) · Grant County (Mixed-dry) · Guadalupe County (Mixed-dry) · Lincoln County (Mixed-dry) · Quay County (Mixed-dry) · Roosevelt County (Mixed-dry) · Socorro County (Mixed-dry) · Union County (Mixed-dry) · Valencia County (Mixed-dry)
Zone 5B: cool-dry
Attic target R60 (ENERGY STAR)Colfax County (Cold) · Harding County (Cold) · Los Alamos County (Cold) · McKinley County (Cold) · Mora County (Cold) · Rio Arriba County (Cold) · San Juan County (Cold) · San Miguel County (Cold) · Sandoval County (Cold) · Santa Fe County (Cold) · Taos County (Cold) · Torrance County (Cold)