Newport Beach, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 55.6 °F (low) to 69.8 °F (high). Annual precipitation averages 11 Inches. Newport Beach is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 47.7 °F | 66.7 °F | 2.55 in. |
| February | 48.4 °F | 66.5 °F | 2.85 in. |
| March | 51.0 °F | 67.3 °F | 1.55 in. |
| April | 52.9 °F | 66.9 °F | 0.64 in. |
| May | 57.2 °F | 68.0 °F | 0.23 in. |
| June | 60.6 °F | 70.1 °F | 0.1 in. |
| July | 63.9 °F | 72.8 °F | 0.06 in. |
| August | 64.5 °F | 74.5 °F | 0.0 in. |
| September | 63.1 °F | 74.4 °F | 0.1 in. |
| October | 58.5 °F | 73.0 °F | 0.41 in. |
| November | 52.1 °F | 71.4 °F | 0.73 in. |
| December | 47.4 °F | 66.5 °F | 1.81 in. |
| Annual | 55.6 °F | 69.8 °F | 11.03 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 35°F to 30°F |
| Plant Hardiness Zone - 2012 | Zone 10b : 35°F to 30°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |