Elk Grove, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 48.6 °F (low) to 74 °F (high). Annual precipitation averages 18.7 Inches. Elk Grove is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 1 - Jan. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.1 °F | 55.5 °F | 3.71 in. |
| February | 41.2 °F | 60.6 °F | 3.79 in. |
| March | 44.1 °F | 65.8 °F | 2.7 in. |
| April | 46.6 °F | 71.2 °F | 1.42 in. |
| May | 51.7 °F | 79.1 °F | 0.8 in. |
| June | 56.2 °F | 86.6 °F | 0.17 in. |
| July | 58.8 °F | 91.7 °F | 0.0 in. |
| August | 58.3 °F | 91.0 °F | 0.03 in. |
| September | 55.9 °F | 87.8 °F | 0.11 in. |
| October | 49.9 °F | 78.0 °F | 0.84 in. |
| November | 42.4 °F | 64.7 °F | 1.69 in. |
| December | 38.4 °F | 55.9 °F | 3.42 in. |
| Annual | 48.6 °F | 74 °F | 18.68 in. |
| Average First Frost Date | Jan. 1 - Jan. 10 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |