Strathmore, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 49.8 °F (low) to 77.5 °F (high). Annual precipitation averages 11.2 Inches. Strathmore 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 Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.7 °F | 57.3 °F | 2.16 in. |
| February | 40.3 °F | 62.8 °F | 1.91 in. |
| March | 43.7 °F | 68.9 °F | 1.89 in. |
| April | 46.8 °F | 74.9 °F | 1.12 in. |
| May | 53.3 °F | 83.6 °F | 0.46 in. |
| June | 59.3 °F | 92.0 °F | 0.11 in. |
| July | 65.0 °F | 97.3 °F | 0.02 in. |
| August | 63.5 °F | 96.5 °F | 0.02 in. |
| September | 58.9 °F | 91.8 °F | 0.08 in. |
| October | 50.5 °F | 80.7 °F | 0.51 in. |
| November | 41.7 °F | 66.8 °F | 0.99 in. |
| December | 36.4 °F | 57.3 °F | 1.88 in. |
| Annual | 49.8 °F | 77.5 °F | 11.15 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 20-30 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 | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |