Old Station, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 35 °F (low) to 62.9 °F (high). Annual precipitation averages 33.8 Inches. Old Station is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.6 °F | 43.8 °F | 5.25 in. |
| February | 25.2 °F | 47.4 °F | 4.65 in. |
| March | 28.6 °F | 52.3 °F | 4.41 in. |
| April | 32.4 °F | 57.7 °F | 3.04 in. |
| May | 39.2 °F | 66.8 °F | 2.6 in. |
| June | 44.8 °F | 76.6 °F | 1.16 in. |
| July | 50.4 °F | 86.1 °F | 0.33 in. |
| August | 48.1 °F | 85.2 °F | 0.28 in. |
| September | 42.4 °F | 79.1 °F | 0.64 in. |
| October | 34.6 °F | 66.5 °F | 2.05 in. |
| November | 28.0 °F | 51.5 °F | 3.47 in. |
| December | 22.9 °F | 42.1 °F | 5.93 in. |
| Annual | 35 °F | 62.9 °F | 33.81 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |