Average annual temperature is 5.1 °C
Absolute maximum temperature: 17.5 °C
Absolute minimum temperature: -7.0 °C
Number of sunny days: 24 days
Number of rainy days: 287 days
Number of snow days: 54 days
Look at detailed online map of Adak
* Weather data for Adak 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) | 4.8 | 7.3 | 6.2 | 6.8 | 8.5 | 10.8 | 17.5 | 15.1 | 15.2 | 11.3 | 11.9 | 8.6 |
| Average daytime temperature (°C) | 2.1 | 2.5 | 2.9 | 4.2 | 5.8 | 8.6 | 13.1 | 12.9 | 12.7 | 8.9 | 6.8 | 2.4 |
| Average temperature (°C) | 0.4 | 0.7 | 1.5 | 2.8 | 4.2 | 6.7 | 10.9 | 10.9 | 10.3 | 6.9 | 4.7 | 0.7 |
| Average night temperature (°C) | -1.5 | -1.0 | 0.5 | 1.5 | 2.9 | 5.5 | 9.6 | 9.7 | 8.7 | 5.2 | 3.3 | -1.0 |
| Absolute minimum temperature (°C) | -6.6 | -7.0 | -2.8 | -2.6 | 0.7 | 2.6 | 6.2 | 7.6 | 5.8 | 1.7 | -2.3 | -6.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.4 | 10.0 | 11.9 | 13.9 | 15.7 | 16.6 | 16.2 | 14.6 | 12.7 | 10.7 | 8.9 | 7.9 |
| Daylight minimum duration (h) | 7.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 3.7 | 4.7 | 3.1 | 6.2 | 4.6 | 4.7 | 2.8 | 4.6 | 5.3 | 4.9 | 3.2 | 3.9 |
| Precipitation (mm) | 168 | 180 | 150 | 140 | 107 | 138 | 104 | 97 | 161 | 105 | 254 | 123 |
| Sunny days | 1 | 1 | 3 | 1 | 3 | 3 | 6 | 0 | 3 | 2 | 0 | 1 |
| Rainy days | 16 | 16 | 22 | 23 | 28 | 27 | 25 | 31 | 27 | 29 | 27 | 16 |
| Snow days | 14 | 11 | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 14 |
The best time to visit Adak during the most sunny months:
Months with the longest average daylight duration in Adak:
The largest precipitation sum in Adak is at