Deconstruct SunTexas Hardiness Zones
Texas covers USDA plant hardiness zones 6b to 10b on the 2023 map, so its coldest areas average −5 to 0 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.
Texas hardiness zone map
This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.
Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.
Zones and daylight by city
| City | Zone | Coldest night | Longest day | Shortest day |
|---|---|---|---|---|
| Houston | 9b | 25 to 30 °F | 14h 04m | 10h 14m |
| San Antonio | 9a | 20 to 25 °F | 14h 02m | 10h 15m |
| Dallas | 8b | 15 to 20 °F | 14h 19m | 9h 59m |
| Austin | 9a | 20 to 25 °F | 14h 06m | 10h 11m |
| Fort Worth | 8b | 15 to 20 °F | 14h 19m | 9h 59m |
| El Paso | 8b | 15 to 20 °F | 14h 14m | 10h 04m |
| Arlington | 8b | 15 to 20 °F | 14h 18m | 10h 00m |
| Corpus Christi | 10a | 30 to 35 °F | 13h 54m | 10h 23m |
| Plano | 8b | 15 to 20 °F | 14h 20m | 9h 58m |
| Lubbock | 7b | 5 to 10 °F | 14h 23m | 9h 56m |
| Laredo | 9b | 25 to 30 °F | 13h 53m | 10h 24m |
| Irving | 8b | 15 to 20 °F | 14h 19m | 9h 59m |
| Garland | 8b | 15 to 20 °F | 14h 20m | 9h 59m |
| Frisco | 8b | 15 to 20 °F | 14h 21m | 9h 58m |
| McKinney | 8b | 15 to 20 °F | 14h 21m | 9h 57m |
| Amarillo | 7a | 0 to 5 °F | 14h 32m | 9h 47m |
| Grand Prairie | 8b | 15 to 20 °F | 14h 18m | 10h 00m |
| Brownsville | 10a | 30 to 35 °F | 13h 46m | 10h 31m |
| Killeen | 8b | 15 to 20 °F | 14h 10m | 10h 08m |
| Denton | 8b | 15 to 20 °F | 14h 21m | 9h 57m |
| Waco | 8b | 15 to 20 °F | 14h 13m | 10h 05m |
| Midland | 8b | 15 to 20 °F | 14h 15m | 10h 03m |
| Odessa | 8b | 15 to 20 °F | 14h 14m | 10h 04m |
| Abilene | 8a | 10 to 15 °F | 14h 17m | 10h 01m |
| Tyler | 8b | 15 to 20 °F | 14h 16m | 10h 02m |
| College Station | 9a | 20 to 25 °F | 14h 08m | 10h 10m |
| Round Rock | 9a | 20 to 25 °F | 14h 07m | 10h 10m |
| Beaumont | 9a | 20 to 25 °F | 14h 05m | 10h 12m |
| McAllen | 10a | 30 to 35 °F | 13h 47m | 10h 30m |
| San Angelo | 8a | 10 to 15 °F | 14h 12m | 10h 06m |
| Wichita Falls | 8a | 10 to 15 °F | 14h 25m | 9h 54m |
| The Woodlands | 9a | 20 to 25 °F | 14h 06m | 10h 12m |
| Galveston | 10a | 30 to 35 °F | 14h 01m | 10h 17m |
Gardening in Texas?
Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.
Questions
What hardiness zones are in Texas?
Texas spans USDA zones 6b to 10b on the 2023 map. Among its larger cities, Amarillo is coldest (zone 7a) and Corpus Christi is warmest (zone 10a).
How do I find my exact zone in Texas?
Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.
How much sun do gardens in Texas get?
In Houston, an open spot gets up to 14.1 hours of daylight in June but only 10.2 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.