Jay, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.7 °C (low) to 21.2 °C (high). Annual precipitation averages 1230.6 Millimeters. Jay 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 | -3.3 °C | 8.6 °C | 68.83 mm |
| February | -1.4 °C | 11.2 °C | 61.98 mm |
| March | 3.3 °C | 16.2 °C | 102.36 mm |
| April | 8.1 °C | 21.3 °C | 124.71 mm |
| May | 13.4 °C | 25.3 °C | 163.32 mm |
| June | 18.3 °C | 29.8 °C | 122.43 mm |
| July | 20.6 °C | 32.8 °C | 103.89 mm |
| August | 19.6 °C | 32.7 °C | 91.19 mm |
| September | 15.3 °C | 28.6 °C | 118.11 mm |
| October | 8.8 °C | 22.4 °C | 108.71 mm |
| November | 3.2 °C | 15.7 °C | 90.42 mm |
| December | -1.5 °C | 10.1 °C | 74.68 mm |
| Annual | 8.7 °C | 21.2 °C | 1230.63 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |