Melbourne, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 18.5 °C (low) to 27.4 °C (high). Annual precipitation averages 1386.1 Millimeters. Melbourne is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.4 °C | 21.8 °C | 70.36 mm |
| February | 12.7 °C | 22.9 °C | 63.75 mm |
| March | 14.9 °C | 24.7 °C | 73.91 mm |
| April | 17.7 °C | 26.9 °C | 65.28 mm |
| May | 20.5 °C | 29.2 °C | 93.73 mm |
| June | 22.8 °C | 31 °C | 191.52 mm |
| July | 23.4 °C | 32 °C | 168.91 mm |
| August | 23.8 °C | 31.9 °C | 191.01 mm |
| September | 23.4 °C | 30.9 °C | 200.15 mm |
| October | 21.1 °C | 28.6 °C | 131.32 mm |
| November | 16.7 °C | 25.5 °C | 70.87 mm |
| December | 13.4 °C | 23 °C | 65.28 mm |
| Annual | 18.5 °C | 27.4 °C | 1386.09 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |