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

What is the temperature in December in Anchorage?

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

How many days does it rain in December in Anchorage?

In Anchorage, Alaska, in December, during 11.1 rainfall days, typically 1.1" (28.4mm) of precipitation is accumulated.

How much does it snow in Anchorage in December?

In Anchorage, Alaska, during December, snow falls for 10.5 days and regularly aggregates up to 20.5" (520.7mm) of snow.

When does it snow the most in Anchorage?

December is the month with the most snowfall in Anchorage, Alaska. Snow falls for 10.5 days and accumulates 20.5" (520.7mm) of snow.
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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