Groveland, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 6.6 °C (low) to 21.4 °C (high). Annual precipitation averages 977.1 Millimeters. 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 | 0.8 °C | 12.4 °C | 195.58 mm |
| February | 1.2 °C | 13.3 °C | 160.78 mm |
| March | 2.2 °C | 15.6 °C | 154.18 mm |
| April | 3.7 °C | 18.1 °C | 86.36 mm |
| May | 7.6 °C | 22.8 °C | 52.07 mm |
| June | 11.1 °C | 28.4 °C | 12.19 mm |
| July | 15.2 °C | 32.7 °C | 1.02 mm |
| August | 14.6 °C | 32.5 °C | 2.03 mm |
| September | 12 °C | 29.4 °C | 5.84 mm |
| October | 7.2 °C | 23.3 °C | 49.78 mm |
| November | 2.7 °C | 16.2 °C | 88.65 mm |
| December | 0.3 °C | 11.7 °C | 168.66 mm |
| Annual | 6.6 °C | 21.4 °C | 977.14 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |