Oak Run, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 8.5 °C (low) to 23.4 °C (high). Annual precipitation averages 1257.3 Millimeters. 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 | 2.7 °C | 13 °C | 216.92 mm |
| February | 3.1 °C | 14.6 °C | 196.34 mm |
| March | 4.3 °C | 17.1 °C | 167.89 mm |
| April | 6.1 °C | 20.3 °C | 102.36 mm |
| May | 9.7 °C | 25.6 °C | 73.66 mm |
| June | 13.5 °C | 31.1 °C | 29.72 mm |
| July | 16.6 °C | 36.2 °C | 3.05 mm |
| August | 16 °C | 35.7 °C | 8.13 mm |
| September | 13.6 °C | 32.3 °C | 23.37 mm |
| October | 9.4 °C | 25.1 °C | 67.31 mm |
| November | 4.9 °C | 17 °C | 122.94 mm |
| December | 2.4 °C | 12.3 °C | 245.62 mm |
| Annual | 8.5 °C | 23.4 °C | 1257.31 mm |
| 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 : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |