Lupton, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.4 °C (low) to 19.9 °C (high). Annual precipitation averages 284.7 Millimeters. Lupton is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.3 °C | 8 °C | 23.11 mm |
| February | -6.1 °C | 10.5 °C | 23.11 mm |
| March | -3.8 °C | 14.7 °C | 22.35 mm |
| April | -0.6 °C | 19.1 °C | 15.49 mm |
| May | 3.8 °C | 24.1 °C | 14.99 mm |
| June | 8.7 °C | 30.4 °C | 6.35 mm |
| July | 13.4 °C | 32.2 °C | 37.59 mm |
| August | 12.8 °C | 30.4 °C | 43.18 mm |
| September | 8.4 °C | 27.2 °C | 27.69 mm |
| October | 1.6 °C | 21.1 °C | 22.61 mm |
| November | -4.4 °C | 13.7 °C | 20.07 mm |
| December | -8.4 °C | 7.9 °C | 28.19 mm |
| Annual | 1.4 °C | 19.9 °C | 284.73 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |