Normally, average daily temperatures in Ketchikan during August is 13 with a typical high being 17 and low being around 12. See our table below for a full breakdown:
| Month | Degrees Celsius |
|---|---|
| Temperature | 13 |
| High Temperature | 17 |
| Low Temperature | 12 |
| Sunshine Per Day | 10 |
Useful Links: Ketchikan Weather: Average Weather & Yearly Climate