Pinole, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 49.9 °F (low) to 68.4 °F (high). Annual precipitation averages 20.2 Inches. Pinole is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 43.0 °F | 56.0 °F | 3.94 in. |
| February | 44.1 °F | 60.1 °F | 4.18 in. |
| March | 46.5 °F | 64.1 °F | 2.77 in. |
| April | 48.3 °F | 67.5 °F | 1.34 in. |
| May | 51.5 °F | 71.4 °F | 0.63 in. |
| June | 54.3 °F | 75.4 °F | 0.16 in. |
| July | 56.0 °F | 77.1 °F | 0.0 in. |
| August | 56.4 °F | 77.2 °F | 0.04 in. |
| September | 55.9 °F | 77.8 °F | 0.07 in. |
| October | 52.8 °F | 73.8 °F | 0.87 in. |
| November | 47.1 °F | 64.1 °F | 2.07 in. |
| December | 43.2 °F | 56.3 °F | 4.08 in. |
| Annual | 49.9 °F | 68.4 °F | 20.15 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |