Highland Beach, Florida has a Tropical Rainforest climate (Köppen classification: Af). Average annual temperatures range from 69.6 °F (low) to 82.5 °F (high). Annual precipitation averages 58.6 Inches. Highland Beach is located in USDA Plant Hardiness Zone 11a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 59.6 °F | 74.6 °F | 2.68 in. |
| February | 61.4 °F | 76.4 °F | 2.92 in. |
| March | 64.1 °F | 78.3 °F | 2.72 in. |
| April | 68.6 °F | 81.3 °F | 3.3 in. |
| May | 72.2 °F | 84.3 °F | 4.55 in. |
| June | 75.5 °F | 87.3 °F | 8.16 in. |
| July | 76.8 °F | 88.8 °F | 5.77 in. |
| August | 77.4 °F | 89.2 °F | 7.67 in. |
| September | 76.4 °F | 87.7 °F | 8.45 in. |
| October | 73.4 °F | 84.8 °F | 5.68 in. |
| November | 67.2 °F | 80.2 °F | 3.71 in. |
| December | 63.1 °F | 76.8 °F | 2.94 in. |
| Annual | 69.6 °F | 82.5 °F | 58.55 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 11a : 40°F to 35°F |
| Plant Hardiness Zone - 2012 | Zone 10b : 35°F to 30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Af - Tropical Rainforest |