December weather forecast
Koyuk, AK

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Weather in December

The first month of the winter, December, is still an extremely cold month in Koyuk, Alaska, with an average temperature ranging between min 5.4°F (-14.8°C) and max 12.4°F (-10.9°C).

Temperature

In the transition to December, Koyuk observes a minor drop in the average high-temperature, shifting from a subzero cold 19.6°F (-6.9°C) in November to an extremely cold 12.4°F (-10.9°C). Koyuk in December experiences a minor decline in temperature, with an average low of 5.4°F (-14.8°C) at night.

Humidity

In Koyuk, Alaska, the average relative humidity in December is 91%.

Rainfall

In Koyuk, in December, during 3.6 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Koyuk, during the entire year, the rain falls for 118.6 days and collects up to 13.39" (340mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Koyuk. In Koyuk, during December, snow falls for 15.1 days and regularly aggregates up to 4.21" (107mm) of snow. In Koyuk, during the entire year, snow falls for 94.3 days and aggregates up to 27.2" (691mm) of snow.

Daylight

The month with the shortest days is December, with an average of 3h and 54min of daylight.
On the first day of December in Koyuk, Alaska, sunrise is at 11:16 am and sunset at 3:51 pm. On the last day of the month, sunrise is at 11:49 am and sunset at 3:46 pm AKST.

Sunshine

In Koyuk, the average sunshine in December is 3h.

UV index

January through March and December, with an average maximum UV index of 1, are months with the lowest UV index in Koyuk, Alaska. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 1 during December translates into the following directions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. When the Sun is at its strongest around midday, find shade and limit exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

How cold is December in Koyuk?

The high-temperature in Koyuk during December is 12.4°F (-10.9°C) and the low-temperature is 5.4°F (-14.8°C).

What is the average humidity in December in Koyuk?

In Koyuk, the average relative humidity in December is 91%.

How much does it rain in Koyuk in December?

In December, in Koyuk, Alaska, the rain falls for 3.6 days. Throughout December, 0.75" (19mm) of precipitation is accumulated.

How many days does it snow in December in Koyuk?

In December, it is snowing for 15.1 days. Throughout December, 4.21" (107mm) of snow is accumulated.

What is the month with the shortest days in Koyuk?

With an average of 3h and 54min of daylight, December has the shortest days of the year in Koyuk.

How many hours of daylight does Koyuk have in December?

In December, the average day length in Koyuk is 3h and 55min.

What time are sunrise and sunset in December in Koyuk?

On the first day of December in Koyuk, Alaska, sunrise is at 11:16 am and sunset at 3:51 pm. On the last day of the month, sunrise is at 11:49 am and sunset at 3:46 pm AKST.

How many hours of sunshine does Koyuk have in December?

In Koyuk, the average sunshine duration in December is 3h.

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

January through March and December, with an average maximum UV index of 1, are months with the lowest UV index in Koyuk, Alaska.

How high is the UV index in December in Koyuk?

In Koyuk, Alaska, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Koyuk, AK

Average temperature in December - Koyuk, AK
  • Average high temperature in December: 12.4°F

The warmest month (with the highest average high temperature) is July (59.5°F).
The month with the lowest average high temperature is January (9.1°F).

  • Average low temperature in December: 5.4°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is January (1.8°F).

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Average pressure in December
Koyuk, AK

Average pressure in December - Koyuk, AK
  • Average pressure in December: 29.75"Hg

The month with the highest atmospheric pressure is May (29.92"Hg).
The month with the lowest atmospheric pressure is October (29.72"Hg).

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Average wind speed in December
Koyuk, AK

Average wind speed in December - Koyuk, AK
  • Average wind speed in December: 8.4mph

The windiest month (with the highest average wind speed) is October (9.6mph).
The calmest month (with the lowest average wind speed) is June (6mph).

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Average humidity in December
Koyuk, AK

Average humidity in December - Koyuk, AK
  • Average humidity in December: 91%

The month with the highest relative humidity is March (92%).
The month with the lowest relative humidity is June (72%).

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Average rainfall in December
Koyuk, AK

Average rainfall in December - Koyuk, AK
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in December
Koyuk, AK

Average rainfall days in December - Koyuk, AK
  • Average rainfall days in December: 3.6 days

The month with the highest number of rainy days is August (19.8 days).
The month with the least rainy days is January (2.7 days).

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Average snowfall in December
Koyuk, AK

Average snowfall in December - Koyuk, AK
  • Average snowfall in December: 4.21"

The month with the highest snowfall is November (4.76").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Koyuk, AK

Average snowfall days in December - Koyuk, AK
  • Average snowfall days in December: 15.1 days

The month with the highest number of snowfall days is March (16.7 days).
The 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
Koyuk, AK

Average daylight in December / Average sunshine in December - Koyuk, AK
  • Average daylight in December: 3h and 5min

The month with the longest days is June (Average daylight: 21h and 36min).
The month with the shortest days is December (Average daylight: 3h and 54min).

  • Average sunshine in December: 3h and 0min

The month with the most sunshine is May (Average sunshine: 8h and 18min).
The month with the least sunshine is June (Average sunshine: 2h and 54min).

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Average sunshine days in December
Koyuk, AK

Average sunshine days in December - Koyuk, AK
  • Average sunshine days in December: 15 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is August (8.4 days).

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Average UV index in December
Koyuk, AK

Average UV index in December - Koyuk, AK
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March and December (UV index 1).

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Average cloud cover in December
Koyuk, AK

Average cloud cover in December - Koyuk, AK
  • Average cloud cover in December: 58

The month with the most cloud cover is August (Cloud cover 62).
The month with the least cloud cover is June (Cloud cover 50).

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Average visibility in December
Koyuk, AK

Average visibility in December - Koyuk, AK
  • Average visibility in December: 4mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).

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Koyuk, Alaska, USA

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