Oak Run, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 47.4 °F (low) to 74 °F (high). Annual precipitation averages 49.5 Inches. Oak Run is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.8 °F | 55.4 °F | 8.54 in. |
| February | 37.6 °F | 58.3 °F | 7.73 in. |
| March | 39.8 °F | 62.7 °F | 6.61 in. |
| April | 42.9 °F | 68.5 °F | 4.03 in. |
| May | 49.5 °F | 78.0 °F | 2.9 in. |
| June | 56.3 °F | 88.0 °F | 1.17 in. |
| July | 61.9 °F | 97.1 °F | 0.12 in. |
| August | 60.8 °F | 96.2 °F | 0.32 in. |
| September | 56.5 °F | 90.1 °F | 0.92 in. |
| October | 48.9 °F | 77.2 °F | 2.65 in. |
| November | 40.9 °F | 62.6 °F | 4.84 in. |
| December | 36.4 °F | 54.2 °F | 9.67 in. |
| Annual | 47.4 °F | 74 °F | 49.5 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |