Climate zones across Texas
Climate zone shapes what insulation work homeowners ask about, so it shapes what a contractor should lead with. The number rises as the climate gets colder (1 is hot, 8 is subarctic). The letter shows moisture: A is humid, B is dry and C is marine. Texas has 254 counties in 6 zones.
1A
3 counties
2A
81 counties
2B
14 counties
3A
58 counties
3B
70 counties
4B
28 counties
Source: U.S. DOE and PNNL, Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270). As of October 21, 2022.
Cities we cover in Texas
- Abilene
- Allen
- Amarillo
- Arlington
- Austin
- Beaumont
- Brownsville
- Carrollton
- College Station
- Corpus Christi
- Dallas
- Denton
- Edinburg
- El Paso
- Fort Worth
- Frisco
- Galveston
- Garland
- Grand Prairie
- Harlingen
- Houston
- Irving
- Killeen
- Laredo
- League City
- Lewisville
- Longview
- Lubbock
- McAllen
- McKinney
- Mesquite
- Midland
- Odessa
- Pasadena
- Pearland
- Plano
- Port Arthur
- Richardson
- Round Rock
- San Angelo
- San Antonio
- Sugar Land
- Temple
- The Woodlands
- Tyler
- Waco
- Wichita Falls
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