North Key Largo, Florida has a Tropical Savanna (Wet and Dry Climate) climate (Köppen classification: Aw). Average annual temperatures range from 71.3 °F (low) to 82.7 °F (high). Annual precipitation averages 47.7 Inches. North Key Largo is located in USDA Plant Hardiness Zone 11a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 61.9 °F | 75.2 °F | 1.79 in. |
| February | 63.9 °F | 76.5 °F | 1.77 in. |
| March | 66.3 °F | 78.3 °F | 1.79 in. |
| April | 70.1 °F | 81.9 °F | 2.59 in. |
| May | 73.7 °F | 84.5 °F | 3.8 in. |
| June | 76.7 °F | 87.4 °F | 7.05 in. |
| July | 78.2 °F | 88.8 °F | 4.68 in. |
| August | 78.4 °F | 89.6 °F | 6.4 in. |
| September | 77.3 °F | 87.7 °F | 7.13 in. |
| October | 74.7 °F | 84.7 °F | 6.26 in. |
| November | 69.2 °F | 80.3 °F | 2.39 in. |
| December | 65.4 °F | 77.3 °F | 2.04 in. |
| Annual | 71.3 °F | 82.7 °F | 47.69 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 11a : 40°F to 35°F |
| Plant Hardiness Zone - 2012 | Zone 10b : 35°F to 30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Aw - Tropical Savanna (Wet and Dry Climate) |