Novato, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 46.2 °F (low) to 70.5 °F (high). Annual precipitation averages 33.2 Inches. Novato is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.7 °F | 56.1 °F | 6.78 in. |
| February | 41.3 °F | 60.3 °F | 7.08 in. |
| March | 42.7 °F | 63.7 °F | 4.16 in. |
| April | 44.5 °F | 67.2 °F | 1.75 in. |
| May | 47.8 °F | 73.8 °F | 0.99 in. |
| June | 51.0 °F | 80.2 °F | 0.16 in. |
| July | 52.9 °F | 82.8 °F | 0.0 in. |
| August | 53.3 °F | 83.4 °F | 0.04 in. |
| September | 51.6 °F | 81.7 °F | 0.05 in. |
| October | 47.9 °F | 75.7 °F | 1.68 in. |
| November | 42.7 °F | 64.3 °F | 3.03 in. |
| December | 39.3 °F | 56.4 °F | 7.48 in. |
| Annual | 46.2 °F | 70.5 °F | 33.2 in. |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| 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 | Csb - Warm-Summer Mediterranean Climate |