La Paz Valley, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 58.2 °F (low) to 87 °F (high). Annual precipitation averages 4.7 Inches. La Paz Valley is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.5 °F | 66.3 °F | 0.62 in. |
| February | 43.0 °F | 70.4 °F | 0.64 in. |
| March | 48.8 °F | 77.8 °F | 0.55 in. |
| April | 54.6 °F | 85.3 °F | 0.12 in. |
| May | 63.7 °F | 94.0 °F | 0.1 in. |
| June | 72.8 °F | 103.9 °F | 0.02 in. |
| July | 80.4 °F | 107.7 °F | 0.48 in. |
| August | 79.9 °F | 106.9 °F | 0.63 in. |
| September | 72.5 °F | 101.2 °F | 0.45 in. |
| October | 58.9 °F | 89.3 °F | 0.27 in. |
| November | 46.1 °F | 75.7 °F | 0.29 in. |
| December | 38.6 °F | 64.9 °F | 0.57 in. |
| Annual | 58.2 °F | 87 °F | 4.74 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWh - Hot Desert Climate |