Concow, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 50.1 °F (low) to 72 °F (high). Annual precipitation averages 56.2 Inches. Concow 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. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.5 °F | 54.4 °F | 9.99 in. |
| February | 40.4 °F | 57.1 °F | 10.1 in. |
| March | 42.8 °F | 61.3 °F | 8.11 in. |
| April | 45.5 °F | 66.9 °F | 4.55 in. |
| May | 51.8 °F | 75.7 °F | 2.5 in. |
| June | 58.1 °F | 85.5 °F | 0.99 in. |
| July | 64.1 °F | 93.1 °F | 0.07 in. |
| August | 63.4 °F | 92.2 °F | 0.09 in. |
| September | 60.0 °F | 87.4 °F | 0.41 in. |
| October | 52.6 °F | 75.4 °F | 2.77 in. |
| November | 44.1 °F | 61.4 °F | 5.44 in. |
| December | 38.8 °F | 53.7 °F | 11.14 in. |
| Annual | 50.1 °F | 72 °F | 56.16 in. |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |