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Weather in September in Alaska

Considering a trip to Alaska this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What is the weather like in Alaska in September?

Alaska is a region in the United States of America. The weather in Alaska in September can be quite varied, with temperatures that range from very cold to moderate and precipitation levels ranging from moderate to heavy.

Temperatures

The average maximum daytime temperatures vary from very cold in Denali National Park and Preserve at 1°C to moderate in Soldotna at 14°C. Nighttime temperatures generally drop to 8°C in Soldotna and -5°C in Denali National Park and Preserve.

Precipitation

In September, precipitation varies across different areas. From moderate snow/rainfall in Point Barrow with an average of 32 mm to heavy snow/rainfall in Glacier Bay National Park and Preserve with 470 mm. Based on climate data from the last 30 years, Anchorage receives the most rainfall during this month of the year.

Average sunshine

Most areas experience a moderate amount of sunshine, with approximately 160 hours of sunlight expected in Anchorage. This makes it neither too gloomy nor overly bright.

For specific regional insights in Alaska for September, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Alaska climate page.

Where to go in Alaska in September

Find more information for the most popular destinations in the Alaska on the map below. Click on a destination dot for more detailes.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in September for the 5 most popular destinations in Alaska?

Anchorage

In September Anchorage generally has moderate temperatures with maximum daytime temperatures around 13°C, minimum nighttime temperatures around 8°C and high monthly rainfall. So on average the conditions are poor that month.

Anchorage
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
17°C 
12°C 
204 hours 
111 mm 
14 days 
13°C 
8°C 
160 hours 
131 mm 
14 days 
poor 
October   >> October
>>  
6°C 
1°C 
117 hours 
101 mm 
12 days 
poor 
Climate in Anchorage

Fairbanks

In September Fairbanks generally has moderate temperatures with maximum daytime temperatures around 13°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are unpleasant that month.

Fairbanks
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
10°C 
166 hours 
73 mm 
13 days 
13°C 
4°C 
122 hours 
49 mm 
10 days 
October   >> October
>>  
2°C 
-6°C 
85 hours 
25 mm 
12 days 
poor 
Climate in Fairbanks

Juneau

In September Juneau generally has low temperatures with maximum daytime temperatures around 11°C, minimum nighttime temperatures around 5°C and heavy monthly rainfall. So on average the conditions are poor that month.

Juneau
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
14°C 
8°C 
161 hours 
249 mm 
16 days 
poor 
11°C 
5°C 
112 hours 
368 mm 
19 days 
poor 
October   >> October
>>  
6°C 
1°C 
65 hours 
359 mm 
22 days 
poor 
Climate in Juneau

Kenai

In September Kenai generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 9°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Kenai
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
17°C 
12°C 
106 mm 
14 days 
14°C 
9°C 
140 mm 
15 days 
October   >> October
>>  
8°C 
3°C 
112 mm 
14 days 
poor 
Climate in Kenai

Soldotna

In September Soldotna generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 8°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Soldotna
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
18°C 
11°C 
104 mm 
14 days 
14°C 
8°C 
130 mm 
15 days 
October   >> October
>>  
8°C 
1°C 
104 mm 
14 days 
poor 
Climate in Soldotna

Is your destination not in the list? Have a look at other destinations in Alaska, in the United States of America.

Is September the best time to visit Alaska?

Given the typically poor weather conditions in Anchorage, September may not be the ideal time to visit Alaska.

Generally speaking, July provides pleasant weather in Anchorage. On the other hand, the weather in January, February, March, April, September, October, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Alaska. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.