Fort Pierce, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 66 °F (low) to 82.1 °F (high). Annual precipitation averages 57.8 Inches. Fort Pierce is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 54.0 °F | 73.0 °F | 2.95 in. |
| February | 56.3 °F | 75.1 °F | 2.72 in. |
| March | 59.6 °F | 77.2 °F | 3.22 in. |
| April | 64.5 °F | 81.2 °F | 3.35 in. |
| May | 69.4 °F | 84.8 °F | 4.52 in. |
| June | 73.3 °F | 88.0 °F | 6.95 in. |
| July | 74.4 °F | 89.7 °F | 6.07 in. |
| August | 75.0 °F | 89.7 °F | 7.96 in. |
| September | 74.3 °F | 87.8 °F | 7.93 in. |
| October | 70.4 °F | 84.4 °F | 6.05 in. |
| November | 62.8 °F | 78.8 °F | 3.33 in. |
| December | 57.8 °F | 75.3 °F | 2.7 in. |
| Annual | 66 °F | 82.1 °F | 57.75 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |