Ketchikan in september: average Weather, Temperature and Climate
Weather in Ketchikan in september 2025
The weather in Ketchikan in the month of september comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather
Weather at 6am
50°F
Moderate rain at times
32% of time
23%
18%
17%
Weather at 12pm
58°F
Moderate rain at times
41% of time
27%
14%
13%
Weather at 6pm
54°F
Moderate rain at times
38% of time
27%
15%
14%
Weather at 3am
50°F
25%
24%
18%
16%
Evolution of daily average temperature and precipitation in Ketchikan in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Ketchikan in september.
The climate of Ketchikan in september is tolerable
In september in Ketchikan, the climate is wet (with 17in of rainfall over 14 days). The situation is deteriorating compared to the previous month since in august there is an average of 13.7in of precipitation over 12 days.
The climate is fairly cold here september, but it is liveable when dressing warm. The thermometer averaged maximum of 58°F. On average, the recorded minimum temperature is 50°F. Thus, the mean temperature average in september in Ketchikan is 54°F. These temperatures are far removed from those records observed in Ketchikan in the month of september with a maximum record of 74°F in 2017 and a minimum record of 40°F in 2009. You can plan to have about 3 days with temperatures above 65°F, or 10% of time.
In september in Ketchikan, the days on average last 12:42. The sun rises at 05:20 and sunset is at 18:02.
With a bad climate, september is not recommended to go there in Alaska.
Seasonal average climate and temperature of Ketchikan in september
Check below seasonal norms These statistics are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 54°F | ||||
| Highest temperature | 58°F | ||||
| Lowest temperature | 50°F | ||||
| Highest record temperature | 74°F (2017) | ||||
| Lowest record temperature | 40°F (2009) | ||||
| Number of days at +65°F | 3 day(s) (10%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Sea temperature | |||||
| Average sea temperature | 54°F | ||||
| Lowest sea temperature | 51°F | ||||
| Highest sea temperature | 57°F | ||||
| Wind | |||||
| Wind speed | 14km/h | ||||
| Wind temperature | 49°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 17in | ||||
| Number of days with rainfall | 14 day(s) (46%) | ||||
| Record daily rainfall | 5.9in (2011) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 91% | ||||
| Visibility | 8.38km | ||||
| Cloud cover | 58% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:20 | ||||
| Time of sunset | 18:02 | ||||
| Length of day | 12:42 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Ketchikan in september 2024:
56°F to 58°F
54°F to 58°F
54°F to 58°F
56°F to 59°F
54°F to 56°F
56°F to 56°F
58°F to 59°F
54°F to 56°F
52°F to 56°F
54°F to 54°F
52°F to 58°F
54°F to 56°F
54°F to 56°F
52°F to 56°F
52°F to 54°F
54°F to 56°F
50°F to 54°F
50°F to 54°F
52°F to 54°F
50°F to 52°F
54°F to 56°F
52°F to 52°F
54°F to 56°F
52°F to 54°F
50°F to 52°F
50°F to 52°F
50°F to 52°F
49°F to 50°F
49°F to 50°F
49°F to 50°F
Map: other cities in Alaska in september
Cities near Ketchikan:
| Sitka in september | tolerable weather |
| Haines in september | bad weather |
| Wrangell-St. Elias National Park in september | very bad weather |
| Cordova in september | very bad weather |
| Valdez in september | very bad weather |
| Tok in september | very bad weather |
| Anchorage in september | tolerable weather |
| Kenai in september | bad weather |
| Anchor Point in september | bad weather |
| Kodiak in september | tolerable weather |
| Healy in september | very bad weather |
| Fairbanks in september | very bad weather |
Click over cities on the map for information about the weather in september.
Ketchikan
perfect weather
good
tolerable
bad
very bad
Weather data for Ketchikan in september:
Weather data for Ketchikan for september are derived from an average of the weather forecast since 2009 in Ketchikan. There is a margin of error and these forecasts are to be considered as general information only. The weather in Ketchikan can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Ketchikan.