North Tustin, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 12.1 °C (low) to 24.3 °C (high). Annual precipitation averages 344.4 Millimeters. North Tustin is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.7 °C | 20 °C | 74.68 mm |
| February | 8.1 °C | 20.1 °C | 88.65 mm |
| March | 9.4 °C | 21.1 °C | 52.32 mm |
| April | 10.6 °C | 22.9 °C | 19.81 mm |
| May | 13 °C | 23.8 °C | 7.87 mm |
| June | 14.9 °C | 25.8 °C | 2.54 mm |
| July | 16.9 °C | 28.6 °C | 1.78 mm |
| August | 17.2 °C | 29.7 °C | 0.25 mm |
| September | 16.3 °C | 29.4 °C | 3.56 mm |
| October | 13.6 °C | 26.8 °C | 12.19 mm |
| November | 9.9 °C | 23.1 °C | 22.86 mm |
| December | 7.3 °C | 19.8 °C | 57.91 mm |
| Annual | 12.1 °C | 24.3 °C | 344.42 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |