Lenwood, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 9.8 °C (low) to 26.3 °C (high). Annual precipitation averages 113 Millimeters. Lenwood is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.2 °C | 15.4 °C | 18.29 mm |
| February | 2.8 °C | 17.4 °C | 21.84 mm |
| March | 5.3 °C | 20.9 °C | 13.97 mm |
| April | 8.5 °C | 24.6 °C | 6.1 mm |
| May | 12.3 °C | 29.6 °C | 2.03 mm |
| June | 16.7 °C | 35.4 °C | 0.51 mm |
| July | 20.3 °C | 38.3 °C | 8.64 mm |
| August | 20.1 °C | 38 °C | 3.3 mm |
| September | 15.9 °C | 34.1 °C | 3.56 mm |
| October | 10.2 °C | 27.6 °C | 7.11 mm |
| November | 4.1 °C | 20 °C | 7.62 mm |
| December | 0.6 °C | 14.7 °C | 20.07 mm |
| Annual | 9.8 °C | 26.3 °C | 113.04 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |