Mount Plymouth, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 60.7 °F (low) to 82.5 °F (high). Annual precipitation averages 57.7 Inches. Mount Plymouth is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 46.2 °F | 70.1 °F | 3.0 in. |
| February | 49.0 °F | 73.0 °F | 2.42 in. |
| March | 52.9 °F | 77.7 °F | 3.46 in. |
| April | 58.5 °F | 83.2 °F | 2.88 in. |
| May | 64.9 °F | 87.9 °F | 3.97 in. |
| June | 71.0 °F | 90.9 °F | 8.18 in. |
| July | 72.7 °F | 92.0 °F | 7.63 in. |
| August | 73.1 °F | 91.9 °F | 9.57 in. |
| September | 71.0 °F | 89.3 °F | 7.5 in. |
| October | 64.3 °F | 84.2 °F | 3.96 in. |
| November | 55.4 °F | 77.2 °F | 2.3 in. |
| December | 49.8 °F | 72.4 °F | 2.82 in. |
| Annual | 60.7 °F | 82.5 °F | 57.69 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |