Boynton Beach, Florida has a Tropical Rainforest climate (Köppen classification: Af). Average annual temperatures range from 21 °C (low) to 28 °C (high). Annual precipitation averages 1552.5 Millimeters. Boynton Beach is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °C | 23.6 °C | 82.3 mm |
| February | 16.3 °C | 24.7 °C | 71.37 mm |
| March | 17.8 °C | 25.7 °C | 83.57 mm |
| April | 20.3 °C | 27.2 °C | 78.23 mm |
| May | 22.4 °C | 28.9 °C | 107.7 mm |
| June | 24.3 °C | 30.6 °C | 229.36 mm |
| July | 25 °C | 31.4 °C | 142.24 mm |
| August | 25.2 °C | 31.7 °C | 199.9 mm |
| September | 24.8 °C | 30.7 °C | 215.39 mm |
| October | 23.1 °C | 29.2 °C | 167.89 mm |
| November | 19.7 °C | 26.8 °C | 104.65 mm |
| December | 17.2 °C | 24.9 °C | 69.85 mm |
| Annual | 21 °C | 28 °C | 1552.45 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 1.7°C to 4.4°C |
| Plant Hardiness Zone - 2012 | Zone 10b : 1.7°C to 4.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Af - Tropical Rainforest |