Average annual temperature is 27.0 °C
Absolute maximum temperature: 30.1 °C
Absolute minimum temperature: 21.4 °C
Number of sunny days: 82 days
Number of rainy days: 283 days
Look at detailed online map of Adelphi
* Weather data for Adelphi U.S. Virgin Islands is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 26.6 | 26.1 | 26.2 | 27.2 | 28.4 | 29.3 | 29.6 | 30.1 | 30.0 | 30.0 | 29.1 | 28.5 |
| Average daytime temperature (°C) | 25.9 | 25.5 | 25.6 | 26.2 | 27.8 | 28.8 | 29.1 | 29.4 | 29.7 | 29.2 | 28.3 | 27.2 |
| Average temperature (°C) | 25.2 | 24.8 | 25.0 | 25.5 | 27.2 | 28.1 | 28.4 | 28.5 | 29.1 | 28.3 | 27.7 | 26.5 |
| Average night temperature (°C) | 24.2 | 24.0 | 24.2 | 24.5 | 26.2 | 27.2 | 27.5 | 27.4 | 28.1 | 27.1 | 26.9 | 25.7 |
| Absolute minimum temperature (°C) | 22.8 | 23.1 | 23.2 | 21.4 | 24.2 | 25.3 | 25.9 | 25.1 | 26.2 | 24.9 | 25.5 | 23.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.5 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.1 | 10.8 | 11.0 | 11.1 | 11.4 | 11.8 | 11.1 | 10.5 | 11.2 | 9.1 | 9.7 | 10.0 |
| Precipitation (mm) | 67 | 30 | 18 | 66 | 54 | 62 | 67 | 110 | 48 | 254 | 61 | 41 |
| Sunny days | 6 | 4 | 14 | 5 | 9 | 7 | 5 | 6 | 7 | 4 | 6 | 9 |
| Rainy days | 25 | 24 | 17 | 25 | 22 | 23 | 26 | 25 | 23 | 27 | 24 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Adelphi is at