Murphy, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.3 °F (low) to 70.9 °F (high). Annual precipitation averages 45.6 Inches. Murphy is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.9 °F | 47.9 °F | 2.19 in. |
| February | 29.4 °F | 52.7 °F | 2.23 in. |
| March | 37.9 °F | 61.8 °F | 3.67 in. |
| April | 46.9 °F | 70.9 °F | 4.63 in. |
| May | 57.3 °F | 78.3 °F | 6.13 in. |
| June | 66.4 °F | 86.6 °F | 4.83 in. |
| July | 70.6 °F | 91.9 °F | 3.95 in. |
| August | 69.0 °F | 91.8 °F | 3.49 in. |
| September | 60.7 °F | 84.1 °F | 4.29 in. |
| October | 48.9 °F | 73.1 °F | 4.06 in. |
| November | 37.9 °F | 61.3 °F | 3.4 in. |
| December | 29.2 °F | 50.5 °F | 2.71 in. |
| Annual | 48.3 °F | 70.9 °F | 45.58 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |