Greeley Hill, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 43.8 °F (low) to 70.2 °F (high). Annual precipitation averages 36.7 Inches. Greeley Hill is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.0 °F | 54.2 °F | 7.16 in. |
| February | 33.8 °F | 55.6 °F | 6.56 in. |
| March | 36.1 °F | 59.8 °F | 5.37 in. |
| April | 38.7 °F | 64.1 °F | 3.05 in. |
| May | 45.4 °F | 72.4 °F | 1.54 in. |
| June | 52.1 °F | 82.6 °F | 0.57 in. |
| July | 59.6 °F | 90.5 °F | 0.12 in. |
| August | 58.3 °F | 90.2 °F | 0.09 in. |
| September | 53.7 °F | 84.8 °F | 0.17 in. |
| October | 45.0 °F | 73.8 °F | 2.01 in. |
| November | 37.2 °F | 61.1 °F | 3.69 in. |
| December | 32.4 °F | 53.0 °F | 6.32 in. |
| Annual | 43.8 °F | 70.2 °F | 36.65 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 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 |