Safety Harbor, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 65.8 °F (low) to 81.3 °F (high). Annual precipitation averages 56 Inches. Safety Harbor is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 51.9 °F | 69.7 °F | 3.01 in. |
| February | 55.0 °F | 72.4 °F | 2.63 in. |
| March | 59.1 °F | 76.1 °F | 3.11 in. |
| April | 64.9 °F | 81.0 °F | 2.87 in. |
| May | 70.5 °F | 85.9 °F | 2.98 in. |
| June | 75.2 °F | 88.8 °F | 7.81 in. |
| July | 76.4 °F | 89.5 °F | 9.31 in. |
| August | 76.5 °F | 89.8 °F | 9.47 in. |
| September | 74.9 °F | 88.7 °F | 7.24 in. |
| October | 69.0 °F | 84.0 °F | 2.68 in. |
| November | 60.6 °F | 77.3 °F | 2.06 in. |
| December | 55.1 °F | 72.3 °F | 2.83 in. |
| Annual | 65.8 °F | 81.3 °F | 56 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |