Columbia, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 44.6 °F (low) to 72.6 °F (high). Annual precipitation averages 37.2 Inches. Columbia is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.2 °F | 55.5 °F | 7.06 in. |
| February | 35.5 °F | 57.3 °F | 6.38 in. |
| March | 38.0 °F | 62.1 °F | 5.65 in. |
| April | 40.4 °F | 66.5 °F | 3.33 in. |
| May | 45.8 °F | 75.5 °F | 1.89 in. |
| June | 52.3 °F | 85.6 °F | 0.5 in. |
| July | 58.7 °F | 93.6 °F | 0.08 in. |
| August | 58.6 °F | 92.9 °F | 0.11 in. |
| September | 54.2 °F | 87.5 °F | 0.16 in. |
| October | 45.9 °F | 76.2 °F | 1.81 in. |
| November | 38.2 °F | 63.1 °F | 3.45 in. |
| December | 33.9 °F | 55.0 °F | 6.77 in. |
| Annual | 44.6 °F | 72.6 °F | 37.19 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |