Oakland, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 43.3 °F (low) to 65.6 °F (high). Annual precipitation averages 39 Inches. Oakland is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.6 °F | 49.3 °F | 6.05 in. |
| February | 36.0 °F | 53.4 °F | 4.09 in. |
| March | 37.6 °F | 58.1 °F | 4.31 in. |
| April | 40.5 °F | 62.5 °F | 3.16 in. |
| May | 45.3 °F | 69.4 °F | 2.38 in. |
| June | 49.8 °F | 75.8 °F | 1.08 in. |
| July | 53.8 °F | 84.6 °F | 0.38 in. |
| August | 53.3 °F | 85.7 °F | 0.37 in. |
| September | 48.9 °F | 79.7 °F | 1.06 in. |
| October | 43.4 °F | 66.8 °F | 3.13 in. |
| November | 39.6 °F | 54.6 °F | 5.86 in. |
| December | 35.6 °F | 47.8 °F | 7.14 in. |
| Annual | 43.3 °F | 65.6 °F | 39.01 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |