Polk City, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 62.9 °F (low) to 83.4 °F (high). Annual precipitation averages 53.1 Inches. Polk City is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 49.3 °F | 71.7 °F | 2.83 in. |
| February | 52.3 °F | 74.9 °F | 2.29 in. |
| March | 55.8 °F | 78.9 °F | 2.98 in. |
| April | 61.2 °F | 83.9 °F | 2.78 in. |
| May | 67.0 °F | 88.5 °F | 3.65 in. |
| June | 72.0 °F | 91.0 °F | 8.32 in. |
| July | 73.7 °F | 91.7 °F | 7.72 in. |
| August | 73.8 °F | 91.8 °F | 8.07 in. |
| September | 72.4 °F | 90.0 °F | 7.08 in. |
| October | 66.4 °F | 85.4 °F | 2.96 in. |
| November | 57.9 °F | 78.6 °F | 1.84 in. |
| December | 52.6 °F | 74.0 °F | 2.6 in. |
| Annual | 62.9 °F | 83.4 °F | 53.12 in. |
| Average First Frost Date | Frost Rare |
| 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 9b : 25°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |