| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Jan. 21 - Jan. 31 |
| Average Last Frost Date: | Jan. 21 - Jan. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 34a - Northern Humid Gulf Coastal Prairies |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 77038 - Houston, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 41 | 44 | 52 | 58 | 66 | 72 | 74 | 73 | 68 | 59 | 50 | 43 | 58 |
| Avg Max Temp (°F) | 62 | 66 | 73 | 79 | 85 | 90 | 93 | 93 | 89 | 82 | 72 | 64 | 79 |
| Avg Precip (In.) | 4.01 | 3.03 | 3.51 | 3.38 | 5.09 | 5.49 | 3.9 | 4.24 | 4.92 | 4.33 | 4.46 | 3.68 | 50.02 |