Lincoln, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 48.8 °F (low) to 75.1 °F (high). Annual precipitation averages 21.9 Inches. Lincoln is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.6 °F | 55.7 °F | 4.04 in. |
| February | 40.6 °F | 60.8 °F | 3.85 in. |
| March | 43.6 °F | 65.7 °F | 3.16 in. |
| April | 46.0 °F | 71.6 °F | 1.89 in. |
| May | 51.8 °F | 80.3 °F | 1.08 in. |
| June | 57.4 °F | 89.0 °F | 0.26 in. |
| July | 61.3 °F | 95.3 °F | 0.01 in. |
| August | 60.2 °F | 94.2 °F | 0.04 in. |
| September | 56.6 °F | 89.3 °F | 0.16 in. |
| October | 49.5 °F | 78.9 °F | 1.08 in. |
| November | 42.1 °F | 64.7 °F | 2.17 in. |
| December | 37.9 °F | 55.9 °F | 4.14 in. |
| Annual | 48.8 °F | 75.1 °F | 21.88 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°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 |