Murchison, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55 °F (low) to 76.7 °F (high). Annual precipitation averages 44.8 Inches. Murchison 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.4 °F | 57.5 °F | 3.6 in. |
| February | 39.9 °F | 61.5 °F | 3.75 in. |
| March | 46.5 °F | 68.8 °F | 4.1 in. |
| April | 53.3 °F | 76.2 °F | 3.95 in. |
| May | 62.9 °F | 83.2 °F | 4.53 in. |
| June | 70.3 °F | 89.9 °F | 4.1 in. |
| July | 73.0 °F | 93.6 °F | 2.33 in. |
| August | 72.5 °F | 94.6 °F | 2.5 in. |
| September | 66.3 °F | 89.0 °F | 3.21 in. |
| October | 55.5 °F | 78.8 °F | 4.86 in. |
| November | 45.2 °F | 67.5 °F | 3.62 in. |
| December | 38.2 °F | 59.4 °F | 4.27 in. |
| Annual | 55 °F | 76.7 °F | 44.82 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |