Lake Mary, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 61.7 °F (low) to 82.5 °F (high). Annual precipitation averages 55.5 Inches. Lake Mary is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 47.6 °F | 70.4 °F | 2.94 in. |
| February | 50.2 °F | 73.2 °F | 2.48 in. |
| March | 54.1 °F | 77.7 °F | 3.44 in. |
| April | 59.5 °F | 82.7 °F | 3.02 in. |
| May | 65.7 °F | 87.7 °F | 3.75 in. |
| June | 71.5 °F | 90.6 °F | 8.03 in. |
| July | 73.3 °F | 92.0 °F | 7.54 in. |
| August | 73.7 °F | 91.8 °F | 8.16 in. |
| September | 71.9 °F | 89.3 °F | 7.27 in. |
| October | 65.4 °F | 84.2 °F | 4.11 in. |
| November | 56.7 °F | 77.4 °F | 2.27 in. |
| December | 51.0 °F | 72.6 °F | 2.53 in. |
| Annual | 61.7 °F | 82.5 °F | 55.54 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 |