Vernon, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.3 °C (low) to 26 °C (high). Annual precipitation averages 1626.1 Millimeters. Vernon is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.9 °C | 17 °C | 129.29 mm |
| February | 5.6 °C | 19.1 °C | 128.78 mm |
| March | 8.7 °C | 22.8 °C | 142.49 mm |
| April | 12.2 °C | 26 °C | 132.59 mm |
| May | 16.7 °C | 29.9 °C | 100.58 mm |
| June | 21 °C | 32.2 °C | 173.23 mm |
| July | 22.3 °C | 33 °C | 183.39 mm |
| August | 22.2 °C | 32.7 °C | 172.47 mm |
| September | 19.7 °C | 31.2 °C | 141.22 mm |
| October | 13.8 °C | 27.3 °C | 89.66 mm |
| November | 7.8 °C | 22.1 °C | 105.16 mm |
| December | 5.4 °C | 18.3 °C | 127.25 mm |
| Annual | 13.3 °C | 26 °C | 1626.11 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |