Proctor, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.6 °C (low) to 25.2 °C (high). Annual precipitation averages 817.1 Millimeters. Proctor is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.8 °C | 14.6 °C | 44.7 mm |
| February | 2.7 °C | 16.7 °C | 54.1 mm |
| March | 6.9 °C | 20.7 °C | 68.83 mm |
| April | 10.9 °C | 25.2 °C | 64.26 mm |
| May | 16.3 °C | 28.9 °C | 113.03 mm |
| June | 20.2 °C | 32.9 °C | 101.85 mm |
| July | 21.8 °C | 35.2 °C | 46.99 mm |
| August | 21.7 °C | 35.5 °C | 61.98 mm |
| September | 17.8 °C | 31.4 °C | 75.44 mm |
| October | 11.8 °C | 26.4 °C | 84.58 mm |
| November | 6.3 °C | 19.8 °C | 56.13 mm |
| December | 1.9 °C | 15.3 °C | 45.21 mm |
| Annual | 11.6 °C | 25.2 °C | 817.1 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |