Temecula, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 50.6 °F (low) to 78.6 °F (high). Annual precipitation averages 15.4 Inches. Temecula is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.2 °F | 67.6 °F | 3.46 in. |
| February | 42.7 °F | 67.3 °F | 3.93 in. |
| March | 44.8 °F | 69.4 °F | 2.36 in. |
| April | 47.4 °F | 74.9 °F | 0.95 in. |
| May | 52.5 °F | 78.5 °F | 0.36 in. |
| June | 55.5 °F | 84.9 °F | 0.09 in. |
| July | 60.3 °F | 92.7 °F | 0.07 in. |
| August | 61.3 °F | 94.2 °F | 0.03 in. |
| September | 59.0 °F | 90.0 °F | 0.15 in. |
| October | 53.3 °F | 82.0 °F | 0.57 in. |
| November | 46.6 °F | 74.4 °F | 1.09 in. |
| December | 41.2 °F | 66.9 °F | 2.36 in. |
| Annual | 50.6 °F | 78.6 °F | 15.42 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| 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 | BSk - Cold Semi-Arid Climate |