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Weather & Climate
Ketchikan, Alaska, United States
Overview
Climate data and monthly weather averages for Ketchikan.
Key Metrics
Annual Avg
6.2°C
Summer Avg
13.2°C
Winter Avg
-0.2°C
Record High
30.3°C
Record Low
-20°C
Annual Precipitation
2750.6 mm
Avg Humidity
88%
Summer Humidity
85%
Winter Humidity
92%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 8.9° | -0.1° | -20° | 301.6 | 93% | 15 | 38.7 |
| Feb | 9.2° | -0.3° | -15.4° | 184.8 | 90% | 35 | 35.2 |
| Mar | 16.1° | 1.2° | -17.1° | 207.7 | 88% | 70 | 34.7 |
| Apr | 20.8° | 4.8° | -7.1° | 183.6 | 84% | 107 | 37.6 |
| May | 23.5° | 9° | -1.9° | 146.6 | 82% | 139 | 30.1 |
| Jun | 30.3° | 11.8° | 3.7° | 147 | 83% | 137 | 29.7 |
| Jul | 29° | 13.8° | 6.7° | 168 | 86% | 129 | 24.1 |
| Aug | 28.7° | 14° | 7.2° | 218.5 | 87% | 112 | 29.3 |
| Sep | 23.9° | 11.1° | 2.9° | 279 | 89% | 73 | 43.3 |
| Oct | 18.9° | 6.7° | -7.1° | 324.6 | 91% | 42 | 43 |
| Nov | 11.2° | 2.2° | -16.4° | 301.2 | 93% | 17 | 40.1 |
| Dec | 9.3° | -0.1° | -15.3° | 288 | 93% | 11 | 37.2 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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