La Paz Valley, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 14.6 °C (low) to 30.5 °C (high). Annual precipitation averages 120.4 Millimeters. 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 | 4.2 °C | 19.1 °C | 15.75 mm |
| February | 6.1 °C | 21.3 °C | 16.26 mm |
| March | 9.3 °C | 25.4 °C | 13.97 mm |
| April | 12.6 °C | 29.6 °C | 3.05 mm |
| May | 17.6 °C | 34.4 °C | 2.54 mm |
| June | 22.7 °C | 39.9 °C | 0.51 mm |
| July | 26.9 °C | 42.1 °C | 12.19 mm |
| August | 26.6 °C | 41.6 °C | 16 mm |
| September | 22.5 °C | 38.4 °C | 11.43 mm |
| October | 14.9 °C | 31.8 °C | 6.86 mm |
| November | 7.8 °C | 24.3 °C | 7.37 mm |
| December | 3.7 °C | 18.3 °C | 14.48 mm |
| Annual | 14.6 °C | 30.5 °C | 120.41 mm |
| 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 : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWh - Hot Desert Climate |