Hillsboro Beach, Florida has a Tropical Rainforest climate (Köppen classification: Af). Average annual temperatures range from 21.1 °C (low) to 28 °C (high). Annual precipitation averages 1554 Millimeters. Hillsboro Beach is located in USDA Plant Hardiness Zone 11a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.6 °C | 23.7 °C | 74.93 mm |
| February | 16.6 °C | 24.6 °C | 69.09 mm |
| March | 18.2 °C | 25.6 °C | 75.95 mm |
| April | 20.6 °C | 27.4 °C | 95.76 mm |
| May | 22.6 °C | 29.1 °C | 133.1 mm |
| June | 24.3 °C | 30.7 °C | 217.17 mm |
| July | 25.1 °C | 31.6 °C | 156.97 mm |
| August | 25.3 °C | 31.8 °C | 188.21 mm |
| September | 24.8 °C | 31 °C | 213.61 mm |
| October | 23.2 °C | 29.3 °C | 162.81 mm |
| November | 19.7 °C | 26.6 °C | 99.31 mm |
| December | 17.6 °C | 24.8 °C | 67.06 mm |
| Annual | 21.1 °C | 28 °C | 1553.97 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 11a : 4.4°C to 7.2°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 |