Highland Haven, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.8 °F (low) to 79.4 °F (high). Annual precipitation averages 30.4 Inches. Highland Haven 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 | 35.1 °F | 61.3 °F | 1.81 in. |
| February | 39.1 °F | 64.9 °F | 1.88 in. |
| March | 46.7 °F | 72.0 °F | 2.64 in. |
| April | 54.0 °F | 79.6 °F | 2.28 in. |
| May | 63.2 °F | 85.7 °F | 3.81 in. |
| June | 70.2 °F | 92.4 °F | 2.75 in. |
| July | 72.6 °F | 95.5 °F | 2.26 in. |
| August | 72.5 °F | 96.8 °F | 1.88 in. |
| September | 66.4 °F | 90.5 °F | 3.05 in. |
| October | 55.5 °F | 81.6 °F | 3.19 in. |
| November | 45.4 °F | 70.6 °F | 2.7 in. |
| December | 36.5 °F | 62.2 °F | 2.16 in. |
| Annual | 54.8 °F | 79.4 °F | 30.41 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 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |