Black Diamond, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15 °C (low) to 27.6 °C (high). Annual precipitation averages 1435.1 Millimeters. Black Diamond is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 11 - Jan. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.5 °C | 20.9 °C | 79.76 mm |
| February | 8.3 °C | 22.5 °C | 88.39 mm |
| March | 10.4 °C | 25.2 °C | 87.63 mm |
| April | 13.9 °C | 27.4 °C | 61.21 mm |
| May | 17.5 °C | 30.6 °C | 83.06 mm |
| June | 21.2 °C | 32.1 °C | 222 mm |
| July | 22.2 °C | 32.4 °C | 214.88 mm |
| August | 22.3 °C | 32.3 °C | 217.68 mm |
| September | 21.3 °C | 31.6 °C | 170.94 mm |
| October | 16.7 °C | 28.7 °C | 70.36 mm |
| November | 11.3 °C | 25 °C | 53.34 mm |
| December | 8.4 °C | 22.1 °C | 85.85 mm |
| Annual | 15 °C | 27.6 °C | 1435.1 mm |
| Average First Frost Date | Jan. 11 - Jan. 20 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |