Prescott, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 39.8 °F (low) to 69.1 °F (high). Annual precipitation averages 18.3 Inches. 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 | 24.5 °F | 51.7 °F | 1.74 in. |
| February | 26.8 °F | 54.3 °F | 2.13 in. |
| March | 31.4 °F | 60.0 °F | 1.81 in. |
| April | 36.3 °F | 66.2 °F | 0.66 in. |
| May | 43.8 °F | 74.5 °F | 0.52 in. |
| June | 52.0 °F | 85.2 °F | 0.31 in. |
| July | 59.2 °F | 88.0 °F | 2.9 in. |
| August | 58.4 °F | 85.7 °F | 2.99 in. |
| September | 51.8 °F | 81.0 °F | 1.59 in. |
| October | 40.0 °F | 71.8 °F | 1.05 in. |
| November | 30.3 °F | 60.6 °F | 1.17 in. |
| December | 23.6 °F | 50.7 °F | 1.42 in. |
| Annual | 39.8 °F | 69.1 °F | 18.29 in. |
| 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 : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |