Dover, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 16.8 °C (low) to 28.6 °C (high). Annual precipitation averages 1446 Millimeters. Dover is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.2 °C | 22.2 °C | 77.22 mm |
| February | 10.7 °C | 23.8 °C | 62.99 mm |
| March | 12.6 °C | 26 °C | 72.14 mm |
| April | 15.7 °C | 28.8 °C | 72.39 mm |
| May | 19.1 °C | 31.6 °C | 91.95 mm |
| June | 22.2 °C | 32.7 °C | 235.46 mm |
| July | 23.1 °C | 33.1 °C | 219.71 mm |
| August | 23.2 °C | 33.1 °C | 232.41 mm |
| September | 22.3 °C | 32.3 °C | 193.04 mm |
| October | 18.6 °C | 29.6 °C | 74.42 mm |
| November | 13.7 °C | 26 °C | 47.5 mm |
| December | 10.9 °C | 23.4 °C | 66.8 mm |
| Annual | 16.8 °C | 28.6 °C | 1446.03 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |