Edison, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 10.4 °C (low) to 25.4 °C (high). Annual precipitation averages 195.3 Millimeters. Edison is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 1 - Jan. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.5 °C | 14.6 °C | 36.83 mm |
| February | 4.7 °C | 17.6 °C | 38.35 mm |
| March | 6.9 °C | 20.7 °C | 34.04 mm |
| April | 8.6 °C | 23.9 °C | 16.26 mm |
| May | 12.3 °C | 28.1 °C | 7.11 mm |
| June | 15.8 °C | 32.8 °C | 1.27 mm |
| July | 19.3 °C | 36.3 °C | 0.51 mm |
| August | 18.4 °C | 35.8 °C | 0 mm |
| September | 15.7 °C | 33.1 °C | 1.27 mm |
| October | 10.6 °C | 27.3 °C | 7.87 mm |
| November | 5.7 °C | 19.4 °C | 17.78 mm |
| December | 2.8 °C | 14.7 °C | 34.04 mm |
| Annual | 10.4 °C | 25.4 °C | 195.33 mm |
| Average First Frost Date | Jan. 1 - Jan. 10 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWh - Hot Desert Climate |