Oilton, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 22.2 °C (high). Annual precipitation averages 1007.1 Millimeters. Oilton is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.7 °C | 9.8 °C | 39.12 mm |
| February | -1.7 °C | 12.2 °C | 43.43 mm |
| March | 3.3 °C | 17.3 °C | 76.2 mm |
| April | 8.3 °C | 22.2 °C | 106.17 mm |
| May | 13.8 °C | 26.1 °C | 143.76 mm |
| June | 18.8 °C | 30.7 °C | 118.87 mm |
| July | 21.1 °C | 33.7 °C | 96.77 mm |
| August | 20.1 °C | 33.7 °C | 90.93 mm |
| September | 15.4 °C | 29.3 °C | 93.47 mm |
| October | 8.7 °C | 23.3 °C | 90.17 mm |
| November | 3 °C | 16.8 °C | 60.2 mm |
| December | -2.1 °C | 10.7 °C | 48.01 mm |
| Annual | 8.8 °C | 22.2 °C | 1007.1 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |