Groveland, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 43.8 °F (low) to 70.5 °F (high). Annual precipitation averages 38.5 Inches. Groveland is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.4 °F | 54.4 °F | 7.7 in. |
| February | 34.1 °F | 55.9 °F | 6.33 in. |
| March | 36.0 °F | 60.1 °F | 6.07 in. |
| April | 38.7 °F | 64.5 °F | 3.4 in. |
| May | 45.6 °F | 73.1 °F | 2.05 in. |
| June | 51.9 °F | 83.2 °F | 0.48 in. |
| July | 59.3 °F | 90.9 °F | 0.04 in. |
| August | 58.3 °F | 90.5 °F | 0.08 in. |
| September | 53.6 °F | 84.9 °F | 0.23 in. |
| October | 44.9 °F | 74.0 °F | 1.96 in. |
| November | 36.8 °F | 61.1 °F | 3.49 in. |
| December | 32.5 °F | 53.0 °F | 6.64 in. |
| Annual | 43.8 °F | 70.5 °F | 38.47 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |