Concow, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 10.1 °C (low) to 22.2 °C (high). Annual precipitation averages 1426.5 Millimeters. 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 | 4.2 °C | 12.4 °C | 253.75 mm |
| February | 4.7 °C | 13.9 °C | 256.54 mm |
| March | 6 °C | 16.3 °C | 205.99 mm |
| April | 7.5 °C | 19.4 °C | 115.57 mm |
| May | 11 °C | 24.3 °C | 63.5 mm |
| June | 14.5 °C | 29.7 °C | 25.15 mm |
| July | 17.8 °C | 33.9 °C | 1.78 mm |
| August | 17.4 °C | 33.4 °C | 2.29 mm |
| September | 15.6 °C | 30.8 °C | 10.41 mm |
| October | 11.4 °C | 24.1 °C | 70.36 mm |
| November | 6.7 °C | 16.3 °C | 138.18 mm |
| December | 3.8 °C | 12.1 °C | 282.96 mm |
| Annual | 10.1 °C | 22.2 °C | 1426.48 mm |
| 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 : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |