Average annual temperature is 7.6 °C
Absolute maximum temperature: 29.1 °C
Absolute minimum temperature: -12.4 °C
Number of sunny days: 88 days
Number of rainy days: 263 days
Number of snow days: 14 days
Look at detailed online map of Ketchikan Gateway Borough
* Weather data for Ketchikan Gateway Borough 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) | 7.6 | 5.7 | 10.6 | 18.0 | 28.2 | 25.2 | 29.1 | 26.1 | 23.5 | 18.8 | 10.7 | 8.4 |
| Average daytime temperature (°C) | 4.7 | 2.4 | 5.4 | 7.7 | 15.8 | 17.8 | 21.8 | 20.3 | 15.0 | 11.3 | 7.0 | 4.8 |
| Average temperature (°C) | 2.6 | 0.3 | 1.0 | 3.8 | 10.1 | 13.0 | 16.5 | 16.0 | 11.7 | 8.0 | 4.6 | 3.0 |
| Average night temperature (°C) | 0.7 | -1.5 | -1.7 | 1.1 | 5.7 | 9.2 | 12.7 | 13.0 | 9.6 | 5.7 | 3.0 | 1.2 |
| Absolute minimum temperature (°C) | -7.2 | -12.4 | -10.4 | -2.6 | 0.0 | 5.0 | 9.2 | 9.8 | 5.1 | -2.3 | -2.8 | -6.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 13.0 | 15.0 | 17.0 | 17.0 | 17.0 | 16.0 | 13.0 | 11.0 | 9.0 | 7.0 |
| Daylight mean duration (h) | 7.8 | 9.6 | 11.9 | 14.2 | 16.3 | 17.4 | 16.8 | 15.0 | 12.7 | 10.5 | 8.3 | 7.2 |
| Daylight minimum duration (h) | 7.0 | 8.0 | 10.0 | 13.0 | 15.0 | 17.0 | 16.0 | 13.0 | 11.0 | 9.0 | 7.0 | 7.0 |
| Sunshine mean duration (h) | 1.2 | 2.5 | 6.0 | 5.2 | 8.3 | 8.6 | 10.4 | 7.8 | 4.4 | 3.2 | 1.5 | 0.5 |
| Precipitation (mm) | 470 | 489 | 171 | 327 | 138 | 171 | 89 | 160 | 330 | 277 | 540 | 544 |
| Sunny days | 3 | 2 | 13 | 2 | 14 | 12 | 13 | 11 | 6 | 10 | 1 | 1 |
| Rainy days | 26 | 20 | 14 | 26 | 17 | 18 | 18 | 20 | 24 | 21 | 29 | 30 |
| Snow days | 2 | 6 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Ketchikan Gateway Borough during the most sunny months:
Months with the longest average daylight duration in Ketchikan Gateway Borough:
The largest precipitation sum in Ketchikan Gateway Borough is at