Alaska in september: average Weather, Temperature and Climate, Where to go?
Weather in Alaska in september 2025
Here, find the the weather forecast for the month of september for most popular cities in Alaska. These predictions are probabilities for september from weather reports for many years. The percentage indicates the probability of having the weather mentioned.
Average weather in september in Anchorage
tolerable weather 12cm
Weather at 6am
45°F
Partly Cloudy
31% of time
27%
19%
11%
Weather at 12pm
54°F
Partly Cloudy
33% of time
28%
18%
13%
Weather at 6pm
54°F
Partly Cloudy
30% of time
30%
20%
15%
Weather at 3am
47°F
30%
26%
22%
12%
More information about the weather in Anchorage in september
Where to go in Alaska in september?
Where to go in Alaska in september: destination map
perfect weather
good
tolerable
bad
very bad
Where should you go in Alaska in september when it comes to the weather?
Remember:
The climate in Alaska in september ranges from tolerable to very bad depending on the region and city.
September is not the best month to go to in Alaska. The weather in Anchorage is quite correct. The sun is not there all the time and you might make you wet by rain regularly. Nevertheless, if you don't plan a pool & relaxation trip in Alaska but rather cultural visits or a trek, this climate may be good enough for you. In addition, there are definitely fewer tourists at this time of year.
But it is finally better than in Anchor Point, Ketchikan, Haines, Kenai, Fairbanks, Nome, Hooper Bay, Dillingham, Kodiak, Healy, Barrow, Sitka, Dutch Harbor, Tok, Valdez and Sand Point and surrounding areas where the climate is very bad. It is not recommended to visit these areas in september.
Climate in Alaska in september
Climate in Anchorage in september
In the month of september, maximum temperature is 56°F and minimum temperature is 45°F (for an average temperature of 50°F). The climate is rather cold in this location in september, but it is bearable by dressing warm. With 4in over 6 days, you risk getting wet slightly during your journey. But this is pretty moderate and it will not be continuous.
With a correct climate, september is okay (but not good time) for traveling there in United States.
| September | |||
| Average temperature | 50°F | ||
| Highest temperature | 56°F | ||
| Lowest temperature | 45°F | ||
| Sea temperature | 52°F | ||
| Rainfall | 4in | ||
| Number of days with rainfall | 6 day(s) (20%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 45% | ||
| Length of day | 12:53 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Fairbanks in september
In september, maximum temperature is 52°F and minimum temperature is 40°F (for an average temperature of 45°F). The climate is rather fresh in that area in this month, but it is bearable by dressing hot. With just 2.8in over 4 days, the rain will not be a problem throughout your vacations.
With a bad climate, september is not the best time to go there.
| September | |||
| Average temperature | 45°F | ||
| Highest temperature | 52°F | ||
| Lowest temperature | 40°F | ||
| Rainfall | 2.8in | ||
| Number of days with rainfall | 4 day(s) (15%) | ||
| Humidity | 89% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 49% | ||
| Length of day | 13:02 | ||
| Our opinion at whereandwhen.net | very bad |
Climate in Anchor Point in september
In the month of september, the mean temperature in Anchor Point is 50°F (maximum temperature is 52°F and minimum temperature is 49°F). The climate is fairly cool in this location in the month of september, but it is livable when dressing cosy. With 8.2in over 11 days, you risk getting wet slightly during your vacations. But this is pretty moderate and it is only of temporary showers.
With an unfavorable weather, the month of september is not recommended month to go in this locality.
| September | |||
| Average temperature | 50°F | ||
| Highest temperature | 52°F | ||
| Lowest temperature | 49°F | ||
| Sea temperature | 53°F | ||
| Rainfall | 8.2in | ||
| Number of days with rainfall | 11 day(s) (36%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 10 | ||
| Cloud cover | 50% | ||
| Length of day | 12:51 | ||
| Our opinion at whereandwhen.net | bad |
Climate in Barrow in september
In the month of september, the mean temperature in Barrow is 38°F (maximum temperature is 38°F and minimum temperature is 36°F). The climate is rather cold in that locality in this month. Do not forget to take with you warm clothes! With 2in over 3 days, the rain will not be a problem for your trip.
| September | |||
| Average temperature | 38°F | ||
| Highest temperature | 38°F | ||
| Lowest temperature | 36°F | ||
| Rainfall | 2in | ||
| Number of days with rainfall | 3 day(s) (9%) | ||
| Humidity | 88% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 77% | ||
| Length of day | 13:24 | ||
| Our opinion at whereandwhen.net | very bad |
Climate in Dillingham in september
In the month of september, maximum temperature is 56°F and minimum temperature is 45°F (for an average temperature of 50°F). The climate is fairly cold in this city in september, but it is tolerable when dressing cosy. With 5.4in over 8 days, rainfall can happen during your journey. But this is rather moderate and you will not be too bothered by it.
With an unfavorable weather, september is not recommended month to go in that area.
| September | |||
| Average temperature | 50°F | ||
| Highest temperature | 56°F | ||
| Lowest temperature | 45°F | ||
| Sea temperature | 53°F | ||
| Rainfall | 5.4in | ||
| Number of days with rainfall | 8 day(s) (28%) | ||
| Humidity | 89% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 58% | ||
| Length of day | 12:48 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities in Alaska in september
| Anchorage in september | tolerable weather |
| Fairbanks in september | very bad weather |
| Anchor Point in september | bad weather |
| Barrow in september | very bad weather |
| Dillingham in september | tolerable weather |
| Dutch Harbor in september | bad weather |
| Healy in september | very bad weather |
| Hooper Bay in september | bad weather |
| Ketchikan in september | tolerable weather |
| Tok in september | very bad weather |
| Cordova in september | very bad weather |
| Denali National Park in september | very bad weather |
| Gambell (St. Lawrence Island) in september | very bad weather |
| Gates of the Arctic National Park in september | very bad weather |
| Goodnews Bay in september | bad weather |
| Haines in september | bad weather |
| Katmai National Park in september | tolerable weather |
| Kenai in september | bad weather |
| Kobuk Valley National Park in september | very bad weather |
| Kodiak in september | tolerable weather |
| Kotzebue in september | very bad weather |
| Lake Clark National Park in september | very bad weather |
Weather data for Alaska in september:
Weather data for Alaska in september is derived from an average of the weather forecast since 2009 in Alaska. There is a margin of error and these forecasts are to be considered as general information only. The weather in Alaska can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Alaska.