East Mountain, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.2 °F (low) to 76.3 °F (high). Annual precipitation averages 48.6 Inches. East Mountain 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 | 35.4 °F | 56.9 °F | 3.83 in. |
| February | 38.8 °F | 61.0 °F | 4.03 in. |
| March | 45.7 °F | 68.8 °F | 4.67 in. |
| April | 52.7 °F | 76.3 °F | 4.45 in. |
| May | 62.3 °F | 83.1 °F | 4.76 in. |
| June | 69.7 °F | 90.1 °F | 4.33 in. |
| July | 72.6 °F | 93.5 °F | 2.91 in. |
| August | 71.8 °F | 94.0 °F | 2.87 in. |
| September | 65.5 °F | 88.3 °F | 3.75 in. |
| October | 54.2 °F | 78.3 °F | 4.48 in. |
| November | 44.3 °F | 67.0 °F | 3.9 in. |
| December | 37.3 °F | 58.5 °F | 4.58 in. |
| Annual | 54.2 °F | 76.3 °F | 48.56 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |