Alma, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.6 °F (low) to 77 °F (high). Annual precipitation averages 41.1 Inches. Alma 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 | 35.0 °F | 57.0 °F | 3.11 in. |
| February | 38.8 °F | 61.3 °F | 3.05 in. |
| March | 46.1 °F | 68.3 °F | 3.69 in. |
| April | 53.2 °F | 75.8 °F | 3.67 in. |
| May | 62.8 °F | 83.1 °F | 4.45 in. |
| June | 70.5 °F | 91.0 °F | 3.98 in. |
| July | 73.4 °F | 95.2 °F | 1.8 in. |
| August | 73.1 °F | 96.1 °F | 2.66 in. |
| September | 66.1 °F | 89.7 °F | 3.19 in. |
| October | 55.0 °F | 79.5 °F | 4.87 in. |
| November | 44.7 °F | 67.6 °F | 3.14 in. |
| December | 36.9 °F | 59.0 °F | 3.48 in. |
| Annual | 54.6 °F | 77 °F | 41.09 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 |