Prescott, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 4.4 °C (low) to 20.6 °C (high). Annual precipitation averages 464.6 Millimeters. Prescott is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.2 °C | 10.9 °C | 44.2 mm |
| February | -2.9 °C | 12.4 °C | 54.1 mm |
| March | -0.3 °C | 15.6 °C | 45.97 mm |
| April | 2.4 °C | 19 °C | 16.76 mm |
| May | 6.6 °C | 23.6 °C | 13.21 mm |
| June | 11.1 °C | 29.6 °C | 7.87 mm |
| July | 15.1 °C | 31.1 °C | 73.66 mm |
| August | 14.7 °C | 29.8 °C | 75.95 mm |
| September | 11 °C | 27.2 °C | 40.39 mm |
| October | 4.4 °C | 22.1 °C | 26.67 mm |
| November | -0.9 °C | 15.9 °C | 29.72 mm |
| December | -4.7 °C | 10.4 °C | 36.07 mm |
| Annual | 4.4 °C | 20.6 °C | 464.57 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Csa - Hot-Summer Mediterranean Climate |