| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F |
| Average First Frost Date: | Frost Rare |
| Average Last Frost Date: | Frost Rare |
| 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 77023 - Houston, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 43 | 46 | 53 | 59 | 67 | 73 | 74 | 74 | 70 | 60 | 52 | 45 | 60 |
| Avg Max Temp (°F) | 63 | 66 | 73 | 79 | 85 | 91 | 93 | 93 | 89 | 82 | 72 | 65 | 79 |
| Avg Precip (In.) | 4.2 | 3.04 | 3.42 | 3.41 | 5.14 | 6.14 | 3.88 | 4.31 | 5.42 | 4.41 | 4.54 | 3.73 | 51.64 |