December weather forecast and climate
Anchorage, AK

Wintertime in Anchorage, Alaska, with mountains blanketed in snow
Wintertime in Anchorage, Alaska, with mountains blanketed in snow
The first month of the winter, December, is also a subzero cold month in Anchorage, Alaska, with temperature in the range of an average low of 13.3°F (-10.4°C) and an average high of 23.7°F (-4.6°C).

Temperature

The average high-temperature, is 23.7°F (-4.6°C), while the average low-temperature is 13.3°F (-10.4°C).

Humidity

November and December, with an average relative humidity of 77.1%, are most humid months in Anchorage.

Rainfall

In Anchorage, during December, the rain falls for 11.1 days and regularly aggregates up to 1.1" (28.4mm) of precipitation. In Anchorage, during the entire year, the rain falls for 115.1 days and collects up to 16.7" (423.4mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. The month with the most snowfall is December when snow falls for 10.5 days and typically aggregates up to 20.5" (520.7mm) of snow.

Ocean temperature

In Anchorage, the average seawater temperature in December is 39.6°F (4.2°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

December has the shortest days of the year, with an average of 5.6h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 1.7h of sunshine.

UV index

January, February, November and December, with an average UV index of 0, are months with the lowest UV index.

What is the temperature in December in Anchorage?

The average high-temperature, in December, in Anchorage, is 23.7°F (-4.6°C), while the average low-temperature is 13.3°F (-10.4°C).

What are the most humid months in Anchorage?

November and December, with an average relative humidity of 77.1%, are most humid months in Anchorage.

What is the average humidity in December in Anchorage?

In December, the average relative humidity in Anchorage, Alaska, is 77.1%.

How much does it rain in Anchorage in December?

In Anchorage, Alaska, during December, the rain falls for 11.1 days and regularly aggregates up to 1.1" (28.4mm) of precipitation.

How much does it snow in Anchorage in December?

In Anchorage, in December, during 10.5 snowfall days, 20.5" (520.7mm) of snow is typically accumulated.

What is the snowiest month in Anchorage?

The month with the most snowfall is December when snow falls for 10.5 days and typically aggregates up to 20.5" (520.7mm) of snow.

What is the ocean temperature in December in Anchorage?

In Anchorage, Alaska, in December, the average water temperature is 39.6°F (4.2°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the month with the shortest days in Anchorage?

The month with the shortest days in Anchorage, Alaska, is December, with an average of 5.6h of daylight.

How many hours of daylight does Anchorage have in December?

The average length of the day in December in Anchorage, Alaska, is 5.6h.

What is the month with the least sunshine in Anchorage?

With an average of 1.7h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December in Anchorage?

In December, the average sunshine in Anchorage, Alaska, is 1.7h.

What is the month with the lowest UV index in Anchorage?

January, February, November and December, with an average UV index of 0, are months with the lowest UV index in Anchorage, Alaska.

What is the UV index reading in December in Anchorage?

The average UV index in December is 0.
Average temperature in December - Anchorage, AK
  • Average high temperature in December: 23.8°F

The warmest month (with the highest average high temperature) is July (65.4°F).
The month with the lowest average high temperature is January (22.7°F).

  • Average low temperature in December: 13.3°F

The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is January (11.4°F).

Average humidity in December - Anchorage, AK
  • Average humidity in December: 77.1%

Months with the highest relative humidity are November and December (77.1%).
The month with the lowest relative humidity is May (61.6%).

Average rainfall in December - Anchorage, AK
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is August (3.3").
The driest month (with the lowest rainfall) is April (0.5").

Average rainfall days in December - Anchorage, AK
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is September (14.5 days).
The month with the lowest number of rainy days is April (5.5 days).

Average snowfall in December - Anchorage, AK
  • Average snowfall in December: 20.5"

The month with the highest snowfall is December (20.5").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in December - Anchorage, AK
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is December (10.5 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average sea temperature in December - Anchorage, AK
  • Average sea temperature in December: 39.6°F

The best month for swimming (with the highest average sea temperature) is August (53.1°F).
The coldest month (with the lowest average sea temperature) is February (35.8°F).

Average daylight in December / Average sunshine in December - Anchorage, AK
  • Average daylight in December: 5.6h

The month with the longest days is June (Average daylight: 19.2h).
The month with shortest days is December (Average daylight: 5.6h).

  • Average sunshine in December: 1.7h

The month with most sunshine is May (Average sunshine: 9.3h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in December - Anchorage, AK
  • Average UV index in December: 0

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 0).

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