Jay, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13 °C (low) to 25.1 °C (high). Annual precipitation averages 1700.3 Millimeters. Jay is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.6 °C | 15.7 °C | 151.89 mm |
| February | 5.3 °C | 18.1 °C | 127.25 mm |
| March | 8.7 °C | 21.7 °C | 145.03 mm |
| April | 12.3 °C | 25.2 °C | 137.41 mm |
| May | 16.9 °C | 29.1 °C | 117.6 mm |
| June | 21.1 °C | 31.7 °C | 171.96 mm |
| July | 21.8 °C | 32.6 °C | 184.66 mm |
| August | 21.6 °C | 32.2 °C | 162.56 mm |
| September | 19.2 °C | 30.5 °C | 143 mm |
| October | 13.3 °C | 26.2 °C | 102.11 mm |
| November | 7.4 °C | 21 °C | 118.11 mm |
| December | 5.1 °C | 17.1 °C | 138.68 mm |
| Annual | 13 °C | 25.1 °C | 1700.26 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |