Average annual temperature is 17.0 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -4.1 °C
Number of sunny days: 179 days
Number of rainy days: 186 days
Look at detailed online map of Key
* Weather data for Key United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 21.0 | 25.0 | 24.9 | 28.7 | 29.9 | 33.6 | 35.1 | 35.8 | 32.0 | 28.6 | 25.7 | 21.1 |
| Average daytime temperature (°C) | 14.1 | 17.2 | 18.3 | 21.5 | 25.7 | 29.4 | 31.6 | 31.7 | 28.4 | 22.9 | 17.5 | 13.5 |
| Average temperature (°C) | 9.3 | 11.7 | 12.5 | 15.8 | 19.8 | 23.4 | 26.0 | 25.8 | 22.6 | 17.4 | 11.7 | 8.2 |
| Average night temperature (°C) | 5.5 | 7.7 | 7.5 | 10.6 | 14.7 | 18.3 | 21.2 | 21.2 | 17.5 | 12.7 | 7.2 | 4.0 |
| Absolute minimum temperature (°C) | -4.1 | -3.8 | -4.1 | 4.7 | 5.8 | 14.8 | 19.2 | 16.8 | 13.2 | 5.3 | -3.4 | -3.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.8 | 6.5 | 8.5 | 9.4 | 10.6 | 11.6 | 11.5 | 10.4 | 10.6 | 8.5 | 7.1 | 6.7 |
| Precipitation (mm) | 168 | 125 | 132 | 165 | 69 | 128 | 97 | 159 | 41 | 30 | 65 | 72 |
| Sunny days | 12 | 11 | 18 | 13 | 12 | 13 | 8 | 11 | 18 | 22 | 20 | 21 |
| Rainy days | 19 | 17 | 13 | 17 | 19 | 17 | 23 | 20 | 12 | 9 | 10 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Key during the most sunny months:
The largest precipitation sum in Key is at