Typically, the average weather in Ketchikan all through the month of September is 10 with a normal high in the month being 14 degrees and a low of 9. See our table below for a full breakdown:
| Month | Degrees Celsius |
|---|---|
| Temperature | 10 |
| High Temperature | 14 |
| Low Temperature | 9 |
| Sunshine Per Day | 11 |
Useful Links: Ketchikan Weather: Average Weather & Yearly Climate