Winston, New Mexico has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 2.4 °C (low) to 21.1 °C (high). Annual precipitation averages 338.9 Millimeters. Winston is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.9 °C | 10.9 °C | 12.45 mm |
| February | -5.2 °C | 13.1 °C | 9.14 mm |
| March | -2.4 °C | 17 °C | 7.37 mm |
| April | 0.8 °C | 21.2 °C | 6.86 mm |
| May | 5.1 °C | 25.8 °C | 16.51 mm |
| June | 10.1 °C | 31.2 °C | 18.8 mm |
| July | 13.5 °C | 30.7 °C | 77.22 mm |
| August | 12.7 °C | 28.8 °C | 88.39 mm |
| September | 8.7 °C | 26.3 °C | 44.2 mm |
| October | 2.3 °C | 21.8 °C | 24.13 mm |
| November | -3.6 °C | 15.7 °C | 12.45 mm |
| December | -6.9 °C | 10.9 °C | 21.34 mm |
| Annual | 2.4 °C | 21.1 °C | 338.86 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |