Myra, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 23.6 °C (high). Annual precipitation averages 972.1 Millimeters. Myra 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 | -0.6 °C | 12.3 °C | 46.48 mm |
| February | 1.3 °C | 14.5 °C | 63.75 mm |
| March | 5.8 °C | 19 °C | 83.06 mm |
| April | 10.1 °C | 23.2 °C | 90.17 mm |
| May | 15.6 °C | 27.1 °C | 127 mm |
| June | 20.4 °C | 31.7 °C | 105.16 mm |
| July | 22.4 °C | 34.4 °C | 67.06 mm |
| August | 22.1 °C | 34.8 °C | 60.2 mm |
| September | 17.8 °C | 30.6 °C | 89.66 mm |
| October | 11.2 °C | 24.7 °C | 106.43 mm |
| November | 5.4 °C | 18.3 °C | 67.56 mm |
| December | 0.6 °C | 13.1 °C | 65.53 mm |
| Annual | 11 °C | 23.6 °C | 972.06 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |