Anchorage
Alaska, USA
Long-term weather forecast
Long-term weather forecast
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December weather forecast and Climate
Anchorage, AK

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Wintertime in Anchorage, Alaska with mountains blanketed in snow
Wintertime in Anchorage, Alaska with mountains blanketed in snow
  • The 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).

  • The 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).

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  • The 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%).

  • The 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").

  • The 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).

  • The 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").

  • The 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).

  • The 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).

  • The average daylight in December: 6h

The month with the longest days is June (Average daylight: 19h).
The month with shortest days is December (Average daylight: 6h).

  • The 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).

  • The 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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