| 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 77503 - Pasadena, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 43 | 46 | 53 | 59 | 67 | 73 | 75 | 74 | 70 | 61 | 52 | 45 | 60 |
| Avg Max Temp (°F) | 62 | 66 | 73 | 79 | 85 | 90 | 93 | 93 | 89 | 82 | 72 | 65 | 79 |
| Avg Precip (In.) | 4.56 | 3.08 | 3.35 | 3.42 | 5.14 | 6.56 | 4.44 | 4.42 | 5.73 | 4.48 | 4.69 | 3.78 | 53.65 |