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The climate of Alaska (United States of America)
The state of Alaska is located in the northwestern part of North America and is separated from the mainland of the United States of America by Canada. Because of its geographical location (about one third of Alaska is situated above the Arctic Circle) Alaska is the coldest state of the United States of America. Because of the Alaska Current warm sea water flows along the southern coasts of Alaska. Because of this temperatures during the winter are higher here than you may expect from a region located this far north. However, this does not apply to the northern part of Alaska causing large differences in temperatures in Alaska. In Anchorage, Juneau and Dutch Harbor winters are warmer and shorter than in the north. In Dutch Harbor on Akmaknak Island the coldest month is January. During this month the average 24 hour temperature is just below freezing point. During the summer average daytime temperatures are 10-15 degrees Celsius (50-59 degrees Fahrenheit).

The climate of Alaska can be divided into several climate zones. The southeastern part of Alaska where the capital Juneau is situated has a moderate maritime climate (type Cfb) according to the Köppen Geiger climate classification. This fairly wet part of Alaska can record up to 1,300 millimeters of annual precipitation. However, this is also the warmest region. The largest part of Alaska has a cool land climate (type Dfc). During the summer temperatures are above 10 degrees Celsius (50 degrees Fahrenheit) here. The most northern part of Alaska has a tundra climate (type ET). During the winter it gets extremely cold here, both during day and night. During the summer temperatures rise just above freezing point and subzero temperatures during the night are not uncommon.

Climate information of places in Alaska
The climate information given on this page is only brief. Specific information on weather and climate can be found on the pages per region or city. The following climate information is available for Alaska:

Anchorage
Barrow
Bethel
Dutch Harbor
Fairbanks
Juneau

Ketchikan
Kodiak
Nome

 

 

Climate information
Throughout Alaska several climate figures and temperatures can be recorded. The figures below are for Anchorage and cannot be seen as an average for this state. For climate figures for other places and regions in Alaska please, visit the individual climate pages.

average
 maximum
temperature (°C)

average
minimum

temperature (°C)
average
hours of sunshine

per
day
average days with precipitation
per month
average
mm
precipitation
per month
average
sea
temperature (°C)
January -6 -14 3 9 6
February -3 -12 4 8 5
March 0 -8 6 8 5
April 6 -2 8 7 5
May 13 4 9 9 7
June 16 8 9 10 10
July 19 11 8 12 13
August 17 10 7 14 13
September 13 5 5 14 12
October 5 -2 4 12 9
November -3 -10 3 9 8
December -6 -13 2 11 7
= 0-5 mm ● = 6-30 mm ● = 31-60 mm ● = 61-100 mm ● = 101-200 mm ● = over 200 mm
= 0-0.2 inches ● = 0.2-1.2 inches ● = 1.2-2.4 inches ● = 2.5-4 inches ● = 4.1-8 inches ● = over 8 inches

More climate information
Climate tables are useful but they don’t give an overall picture of the climate and possible weather conditions during a period of time. How high the chances are of hot or cold weather or hurricanes can often not be found in these tables. This is why we offer extra climate information per month. The figures below apply to Anchorage. For climate figures on specific regions and places please, visit the relevant individual climate pages
 

chance of
(very) hot

weather

chance of
(very) cool
weather
chance of
long-term

precipitation
chance of
hurricanes
(cyclones)
chance of
sunny days

UV-index

January
February
March
April
May
June
July
August
September
October
November
December
click here for the explanation of the symbols

Disclaimer
The information at this site was carefully composed from climate data collected by meteorological services, meteorological offices, climate experts and other sources. “More climate info” is based on statistics, climate data and personal experience. No rights can be derived from this site. Weather has no memory and gives no guaranties. Nothing is as changeable and unpredictable as the weather. The authors of this site feel in no way responsible for any damages caused by misinterpretation or other circumstances that may influence your holiday or trip to a certain destination. We provide information, it’s up to the reader to use it to it’s benefit.

 

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