Weldon, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 48.3 °F (low) to 76.7 °F (high). Annual precipitation averages 10.7 Inches. Weldon is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.9 °F | 59.1 °F | 2.38 in. |
| February | 36.9 °F | 61.1 °F | 2.51 in. |
| March | 40.4 °F | 65.9 °F | 1.49 in. |
| April | 44.6 °F | 71.1 °F | 0.63 in. |
| May | 52.2 °F | 79.9 °F | 0.27 in. |
| June | 59.9 °F | 90.1 °F | 0.12 in. |
| July | 65.3 °F | 98.4 °F | 0.14 in. |
| August | 63.8 °F | 98.1 °F | 0.14 in. |
| September | 59.1 °F | 91.5 °F | 0.11 in. |
| October | 49.2 °F | 79.7 °F | 0.36 in. |
| November | 40.0 °F | 67.4 °F | 0.86 in. |
| December | 33.7 °F | 58.1 °F | 1.7 in. |
| Annual | 48.3 °F | 76.7 °F | 10.71 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWh - Hot Desert Climate |