| 2023 Hardiness Zone: | Zone 11a: 40°F to 45°F |
| 2012 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 11a: 40°F to 45°F |
| 1990 Hardiness Zone: | Zone 10a: 30F to 35F |
| Average First Frost Date: | No Frost |
| Average Last Frost Date: | No Frost |
| Koppen-Geiger Climate Zone: | Aw - Tropical Savanna (Wet and Dry Climate) |
| Ecoregion: | 76d - Southern Coast and Islands |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 33037 - Key Largo, FL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 61 | 62 | 65 | 69 | 73 | 76 | 78 | 78 | 77 | 73 | 69 | 64 | 70 |
| Avg Max Temp (°F) | 75 | 76 | 79 | 82 | 86 | 88 | 89 | 89 | 88 | 85 | 80 | 76 | 83 |
| Avg Precip (In.) | 2.31 | 1.77 | 2 | 2.05 | 3.76 | 6.59 | 3.31 | 5.21 | 6.55 | 5.12 | 2.87 | 1.89 | 43.44 |