Tolani Lake, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 39 °F (low) to 72.1 °F (high). Annual precipitation averages 7.3 Inches. Tolani Lake is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.7 °F | 49.6 °F | 0.54 in. |
| February | 24.5 °F | 55.5 °F | 0.51 in. |
| March | 29.9 °F | 63.8 °F | 0.55 in. |
| April | 35.9 °F | 70.7 °F | 0.37 in. |
| May | 44.4 °F | 79.9 °F | 0.28 in. |
| June | 52.9 °F | 91.1 °F | 0.17 in. |
| July | 61.4 °F | 94.3 °F | 1.11 in. |
| August | 60.3 °F | 91.5 °F | 1.03 in. |
| September | 51.8 °F | 85.2 °F | 1.02 in. |
| October | 38.5 °F | 73.6 °F | 0.68 in. |
| November | 27.2 °F | 60.6 °F | 0.46 in. |
| December | 19.9 °F | 49.1 °F | 0.59 in. |
| Annual | 39 °F | 72.1 °F | 7.31 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |