Citrus Heights, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 9.6 °C (low) to 23.6 °C (high). Annual precipitation averages 623.3 Millimeters. Citrus Heights is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.9 °C | 13.1 °C | 109.98 mm |
| February | 5.1 °C | 15.8 °C | 116.08 mm |
| March | 6.8 °C | 18.7 °C | 88.65 mm |
| April | 8.2 °C | 21.9 °C | 46.99 mm |
| May | 11.2 °C | 26.6 °C | 36.32 mm |
| June | 14.2 °C | 31 °C | 6.86 mm |
| July | 16.1 °C | 34.2 °C | 0.51 mm |
| August | 15.7 °C | 33.8 °C | 0.76 mm |
| September | 14 °C | 31.4 °C | 4.06 mm |
| October | 10.3 °C | 25.7 °C | 35.56 mm |
| November | 6.1 °C | 18.1 °C | 60.96 mm |
| December | 3.7 °C | 13.2 °C | 116.59 mm |
| Annual | 9.6 °C | 23.6 °C | 623.32 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 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 | Csa - Hot-Summer Mediterranean Climate |