Sanctuary, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.4 °F (low) to 76.8 °F (high). Annual precipitation averages 36.3 Inches. Sanctuary is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.8 °F | 56.8 °F | 2.15 in. |
| February | 37.8 °F | 60.4 °F | 2.47 in. |
| March | 45.6 °F | 68.5 °F | 3.24 in. |
| April | 52.7 °F | 76.2 °F | 2.98 in. |
| May | 62.7 °F | 83.2 °F | 4.29 in. |
| June | 70.6 °F | 91.3 °F | 3.9 in. |
| July | 73.9 °F | 95.7 °F | 2.15 in. |
| August | 73.5 °F | 96.3 °F | 2.58 in. |
| September | 66.1 °F | 89.0 °F | 3.28 in. |
| October | 54.8 °F | 78.5 °F | 4.05 in. |
| November | 44.7 °F | 67.0 °F | 2.68 in. |
| December | 36.1 °F | 58.3 °F | 2.49 in. |
| Annual | 54.4 °F | 76.8 °F | 36.26 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |