| 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: | Am - Tropical Monsoon | |
| Ecoregion: | 76c - Miami Ridge/Atlantic Coastal Strip | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 33149 - Key Biscayne, FL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 59 | 60 | 63 | 67 | 71 | 75 | 76 | 76 | 75 | 72 | 67 | 62 | 69 |
| Avg Max Temp (°F) | 74 | 75 | 77 | 80 | 84 | 87 | 88 | 88 | 87 | 84 | 80 | 76 | 82 |
| Avg Precip (In.) | 2.38 | 2.24 | 2.38 | 3.12 | 5.22 | 8 | 5.15 | 6.56 | 8.07 | 6.49 | 3.42 | 2.14 | 55.17 |