Prescott Valley, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.2 °C (low) to 21.5 °C (high). Annual precipitation averages 393.7 Millimeters. Prescott Valley is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.5 °C | 11.7 °C | 35.05 mm |
| February | -2.2 °C | 13.2 °C | 40.39 mm |
| March | 0.3 °C | 16.5 °C | 34.04 mm |
| April | 3.2 °C | 19.9 °C | 14.48 mm |
| May | 7.3 °C | 24.5 °C | 8.38 mm |
| June | 12.2 °C | 30.4 °C | 12.19 mm |
| July | 16.3 °C | 32.1 °C | 65.02 mm |
| August | 15.7 °C | 30.8 °C | 57.15 mm |
| September | 11.7 °C | 28.2 °C | 49.53 mm |
| October | 5.3 °C | 22.9 °C | 24.64 mm |
| November | -0.3 °C | 16.7 °C | 20.32 mm |
| December | -3.9 °C | 11.1 °C | 32.51 mm |
| Annual | 5.2 °C | 21.5 °C | 393.7 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |