Oakland, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.7 °C (low) to 23.4 °C (high). Annual precipitation averages 1054.4 Millimeters. Oakland is located in USDA Plant Hardiness Zone 8a. 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 | -1.1 °C | 11.4 °C | 56.13 mm |
| February | 0.9 °C | 13.8 °C | 58.42 mm |
| March | 5.4 °C | 18.4 °C | 83.31 mm |
| April | 9.8 °C | 23.2 °C | 95 mm |
| May | 15.3 °C | 27 °C | 146.56 mm |
| June | 20.2 °C | 31.7 °C | 120.65 mm |
| July | 22.4 °C | 34.6 °C | 68.83 mm |
| August | 21.7 °C | 34.7 °C | 68.07 mm |
| September | 17.6 °C | 30.5 °C | 101.85 mm |
| October | 10.9 °C | 24.6 °C | 108.97 mm |
| November | 5.1 °C | 18.1 °C | 70.61 mm |
| December | 0.2 °C | 12.4 °C | 75.95 mm |
| Annual | 10.7 °C | 23.4 °C | 1054.35 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |