Interlachen, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 58.9 °F (low) to 80.8 °F (high). Annual precipitation averages 54 Inches. Interlachen is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 43.6 °F | 67.4 °F | 3.39 in. |
| February | 46.2 °F | 70.6 °F | 2.9 in. |
| March | 50.6 °F | 76.0 °F | 3.57 in. |
| April | 56.6 °F | 81.4 °F | 2.79 in. |
| May | 63.4 °F | 87.2 °F | 3.77 in. |
| June | 70.2 °F | 90.3 °F | 7.98 in. |
| July | 72.3 °F | 91.4 °F | 7.09 in. |
| August | 72.3 °F | 91.0 °F | 7.37 in. |
| September | 70.1 °F | 88.0 °F | 6.69 in. |
| October | 61.9 °F | 82.1 °F | 3.48 in. |
| November | 52.3 °F | 74.8 °F | 2.17 in. |
| December | 46.9 °F | 69.4 °F | 2.75 in. |
| Annual | 58.9 °F | 80.8 °F | 53.95 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |