Rotonda, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 66.2 °F (low) to 81.9 °F (high). Annual precipitation averages 53.4 Inches. Rotonda is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 53.8 °F | 71.8 °F | 2.69 in. |
| February | 56.3 °F | 73.9 °F | 2.15 in. |
| March | 59.6 °F | 76.9 °F | 3.04 in. |
| April | 64.9 °F | 81.4 °F | 2.53 in. |
| May | 69.9 °F | 85.6 °F | 3.17 in. |
| June | 74.3 °F | 88.1 °F | 7.79 in. |
| July | 75.7 °F | 89.2 °F | 8.21 in. |
| August | 75.9 °F | 89.6 °F | 8.82 in. |
| September | 74.6 °F | 88.3 °F | 7.6 in. |
| October | 69.9 °F | 84.7 °F | 3.36 in. |
| November | 62.2 °F | 78.7 °F | 1.82 in. |
| December | 57.2 °F | 74.2 °F | 2.21 in. |
| Annual | 66.2 °F | 81.9 °F | 53.39 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |