Megargel, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.1 °F (low) to 76.9 °F (high). Annual precipitation averages 29.3 Inches. Megargel is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.8 °F | 56.0 °F | 1.28 in. |
| February | 33.1 °F | 59.6 °F | 1.6 in. |
| March | 41.4 °F | 68.5 °F | 2.2 in. |
| April | 49.1 °F | 76.8 °F | 2.44 in. |
| May | 59.6 °F | 84.3 °F | 4.2 in. |
| June | 68.6 °F | 92.0 °F | 3.66 in. |
| July | 72.3 °F | 97.0 °F | 2.39 in. |
| August | 71.3 °F | 96.9 °F | 2.21 in. |
| September | 63.7 °F | 88.9 °F | 2.94 in. |
| October | 52.4 °F | 78.7 °F | 2.99 in. |
| November | 40.5 °F | 66.5 °F | 1.87 in. |
| December | 31.9 °F | 57.3 °F | 1.54 in. |
| Annual | 51.1 °F | 76.9 °F | 29.32 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |