December weather forecast and climate
Old Harbor, AK

Weather in December

December, the first month of the winter, in Old Harbor, is still a cold month, with average temperature ranging between max 36.9°F (2.7°C) and min 32°F (0°C).

Temperature

In December, the average high-temperature is relatively the same as in November - a still wintry 36.9°F (2.7°C). The average low-temperature, in Old Harbor, is 32°F (0°C).

Humidity

In December, the average relative humidity in Old Harbor is 82%.

Rainfall

In Old Harbor, Alaska, during December, the rain falls for 14.8 days and regularly aggregates up to 4.29" (109mm) of precipitation. In Old Harbor, during the entire year, the rain falls for 171.2 days and collects up to 37.32" (948mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Old Harbor, during 5.1 snowfall days, 2.32" (59mm) of snow is typically accumulated. In Old Harbor, during the entire year, snow falls for 35.1 days, and aggregates up to 13.74" (349mm) of snow.

Daylight

With an average of 6.8h of daylight, December has the shortest days of the year in Old Harbor, Alaska.

Sunshine

Months with the least sunshine in Old Harbor are January and December, with an average of 2.6h of sunshine.

UV index

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Old Harbor?

In December, the average high-temperature is 36.9°F (2.7°C), and the average low-temperature is 32°F (0°C).

What is the average humidity in December in Old Harbor?

In Old Harbor, the average relative humidity in December is 82%.

How much does it rain in Old Harbor in December?

In Old Harbor, Alaska, in December, during 14.8 rainfall days, 4.29" (109mm) of precipitation is typically accumulated.

How many days does it snow in December in Old Harbor?

In Old Harbor, Alaska, in December, during 5.1 snowfall days, 2.32" (59mm) of snow is typically accumulated.

What is the month with the shortest days in Old Harbor?

The month with the shortest days in Old Harbor, Alaska, is December, with an average of 6.8h of daylight.

How many hours of daylight does Old Harbor have in December?

In Old Harbor, Alaska, the average length of the day in December is 6.8h.

What is the month with the least sunshine in Old Harbor?

Months with the least sunshine are January and December, with an average of 2.6h of sunshine.

How long on average sun shines in December in Old Harbor?

In Old Harbor, Alaska, the average sunshine in December is 2.6h.

What is the UV index intensity in December in Old Harbor?

The average daily maximum UV index in December in Old Harbor is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.

Average temperature in December
Old Harbor, AK

Average temperature in December - Old Harbor, AK
  • Average high temperature in December: 36.9°F

The warmest month (with the highest average high temperature) is August (57.6°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is March (30.6°F).

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Average pressure in December
Old Harbor, AK

Average pressure in December - Old Harbor, AK
  • Average pressure in December: 29.55"

The month with the highest atmospheric pressure is July (29.98").
The month with the lowest atmospheric pressure is December (29.55").

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Average wind speed in December
Old Harbor, AK

Average wind speed in December - Old Harbor, AK
  • Average wind speed in December: 14.2mph

The windiest month (with the highest average wind speed) is December (14.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in December
Old Harbor, AK

Average humidity in December - Old Harbor, AK
  • Average humidity in December: 82%

The month with the highest relative humidity is July (86%).
Months with the lowest relative humidity are March and November (80%).

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Average rainfall in December
Old Harbor, AK

Average rainfall in December - Old Harbor, AK
  • Average rainfall in December: 4.29"

The wettest months (with the highest rainfall) are October and November (4.53").
The driest month (with the least rainfall) is July (1.85").

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Average rainfall days in December
Old Harbor, AK

Average rainfall days in December - Old Harbor, AK
  • Average rainfall days in December: 14.8 days

The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is March (10.8 days).

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Average snowfall in December
Old Harbor, AK

Average snowfall in December - Old Harbor, AK
  • Average snowfall in December: 2.32"

The month with the highest snowfall is March (3.15").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Old Harbor, AK

Average snowfall days in December - Old Harbor, AK
  • Average snowfall days in December: 5.1 days

The month with the highest number of snowfall days is March (8.5 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Old Harbor, AK

Average daylight in December / Average sunshine in December - Old Harbor, AK
  • Average daylight in December: 6.8h

The month with the longest days is June (Average daylight: 17.8h).
The month with the shortest days is December (Average daylight: 6.8h).

  • Average sunshine in December: 2.6h

The month with the most sunshine is July (Average sunshine: 8.3h).
Months with the least sunshine are January and December (Average sunshine: 2.6).

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Average sunshine days in December
Old Harbor, AK

Average sunshine days in December - Old Harbor, AK
  • Average sunshine days in December: 11.5 days

The month with the most sunshine days is July (14.7 days).
The month with the least sunshine days is April (10.7 days).

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Average UV index in December
Old Harbor, AK

Average UV index in December - Old Harbor, AK
  • Average UV index in December: 2

Months with the highest UV index are June, July, August and September (UV index 3).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in December
Old Harbor, AK

Average cloud cover in December - Old Harbor, AK
  • Average cloud cover in December: 60

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 52).

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Average visibility in December
Old Harbor, AK

Average visibility in December - Old Harbor, AK
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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