Murphy, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.4 °F (low) to 76 °F (high). Annual precipitation averages 41.2 Inches. Murphy 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. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.1 °F | 55.7 °F | 2.66 in. |
| February | 38.8 °F | 60.0 °F | 2.96 in. |
| March | 46.5 °F | 67.5 °F | 3.67 in. |
| April | 54.2 °F | 75.2 °F | 3.58 in. |
| May | 63.5 °F | 82.6 °F | 5.09 in. |
| June | 71.4 °F | 90.5 °F | 3.98 in. |
| July | 74.6 °F | 94.7 °F | 2.17 in. |
| August | 74.3 °F | 95.2 °F | 2.31 in. |
| September | 67.2 °F | 88.4 °F | 3.19 in. |
| October | 55.8 °F | 78.5 °F | 4.75 in. |
| November | 45.5 °F | 66.5 °F | 3.28 in. |
| December | 37.3 °F | 57.7 °F | 3.6 in. |
| Annual | 55.4 °F | 76 °F | 41.24 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 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 |