Top-of-the-World, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 46.6 °F (low) to 74.3 °F (high). Annual precipitation averages 23.5 Inches. Top-of-the-World is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.1 °F | 55.9 °F | 3.62 in. |
| February | 32.9 °F | 58.3 °F | 2.94 in. |
| March | 37.1 °F | 64.5 °F | 2.83 in. |
| April | 42.4 °F | 72.3 °F | 0.86 in. |
| May | 50.4 °F | 81.2 °F | 0.41 in. |
| June | 59.8 °F | 91.3 °F | 0.18 in. |
| July | 65.4 °F | 93.0 °F | 2.17 in. |
| August | 64.0 °F | 91.2 °F | 2.71 in. |
| September | 58.9 °F | 86.8 °F | 1.56 in. |
| October | 48.0 °F | 77.2 °F | 1.43 in. |
| November | 37.9 °F | 64.8 °F | 1.75 in. |
| December | 31.1 °F | 55.0 °F | 2.99 in. |
| Annual | 46.6 °F | 74.3 °F | 23.45 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |