Greasy, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 21.5 °C (high). Annual precipitation averages 1282.7 Millimeters. Greasy is located in USDA Plant Hardiness Zone 7b. 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 | -2.6 °C | 9.3 °C | 72.9 mm |
| February | -0.7 °C | 11.7 °C | 66.04 mm |
| March | 3.9 °C | 16.5 °C | 115.32 mm |
| April | 8.4 °C | 21.4 °C | 129.03 mm |
| May | 13.8 °C | 25.3 °C | 149.35 mm |
| June | 18.8 °C | 30 °C | 132.59 mm |
| July | 20.9 °C | 32.9 °C | 97.54 mm |
| August | 20.2 °C | 32.9 °C | 103.63 mm |
| September | 16.1 °C | 29 °C | 120.4 mm |
| October | 9.6 °C | 22.7 °C | 113.03 mm |
| November | 3.8 °C | 16.4 °C | 103.38 mm |
| December | -1 °C | 10.4 °C | 79.5 mm |
| Annual | 9.3 °C | 21.5 °C | 1282.71 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |