Royal Palm Beach, Florida has a Tropical Monsoon climate (Köppen classification: Am). Average annual temperatures range from 65.7 °F (low) to 83.6 °F (high). Annual precipitation averages 60.2 Inches. Royal Palm Beach is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 55.1 °F | 74.6 °F | 2.77 in. |
| February | 57.0 °F | 77.1 °F | 2.33 in. |
| March | 59.8 °F | 79.6 °F | 3.53 in. |
| April | 64.3 °F | 83.2 °F | 3.13 in. |
| May | 68.4 °F | 86.5 °F | 4.76 in. |
| June | 72.2 °F | 89.1 °F | 8.44 in. |
| July | 73.5 °F | 90.5 °F | 6.72 in. |
| August | 74.1 °F | 90.8 °F | 8.35 in. |
| September | 73.2 °F | 89.0 °F | 8.6 in. |
| October | 69.6 °F | 85.5 °F | 5.83 in. |
| November | 63.1 °F | 80.2 °F | 3.41 in. |
| December | 58.6 °F | 77.0 °F | 2.36 in. |
| Annual | 65.7 °F | 83.6 °F | 60.23 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 35°F to 30°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Am - Tropical Monsoon |