Clifton, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 9.3 °C (low) to 26.5 °C (high). Annual precipitation averages 346.5 Millimeters. Clifton is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.7 °C | 15.6 °C | 29.21 mm |
| February | 1.6 °C | 17.7 °C | 27.18 mm |
| March | 4.1 °C | 21.8 °C | 19.3 mm |
| April | 7.5 °C | 26.2 °C | 6.86 mm |
| May | 12 °C | 31.3 °C | 11.18 mm |
| June | 17.1 °C | 36.7 °C | 11.68 mm |
| July | 20.6 °C | 36.8 °C | 54.61 mm |
| August | 20.1 °C | 35.4 °C | 62.99 mm |
| September | 16.7 °C | 33 °C | 45.97 mm |
| October | 9.7 °C | 27.7 °C | 25.4 mm |
| November | 3.4 °C | 20.6 °C | 21.59 mm |
| December | -0.4 °C | 15.2 °C | 30.48 mm |
| Annual | 9.3 °C | 26.5 °C | 346.45 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |