December weather forecast
Glennallen, AK

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Weather in December

December, the first month of the winter in Glennallen, is still an extremely cold month, with an average temperature varying between 0.9°F (-17.3°C) and 11.5°F (-11.4°C).

Temperature

In December, Glennallen notes an average high-temperature of a frigid cold 11.5°F (-11.4°C), hardly different from the preceding month. In the month of December, an average of 0.9°F (-17.3°C) marks the low-temperature.

Humidity

In December, the average relative humidity is 89%.

Rainfall

In Glennallen, Alaska, in December, it is raining for 5.5 days, with typically 0.59" (15mm) of accumulated precipitation. In Glennallen, Alaska, during the entire year, the rain falls for 81.1 days and collects up to 5.71" (145mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. The month with the most snowfall in Glennallen is December, when snow falls for 11.2 days and typically aggregates up to 4.57" (116mm) of snow.

Daylight

December has the shortest days of the year, with an average of 5h and 18min of daylight.
On the first day of the month, sunrise is at 9:38 am and sunset at 3:24 pm. On the last day of December, sunrise is at 10:06 am and sunset at 3:25 pm AKST.

Sunshine

January and December, with an average of 3.9h of sunshine, are months with the least sunshine in Glennallen.

UV index

The months with the lowest UV index are January through April, September through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.

Frequently asked questions

How cold is December?

The average high-temperature and low-temperature during December are 11.5°F (-11.4°C) and 0.9°F (-17.3°C) respectively.

What is the average humidity in December?

In December, the average relative humidity is 89%.

How much does it rain in December?

In Glennallen, Alaska, in December, it is raining for 5.5 days, with typically 0.59" (15mm) of accumulated precipitation.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 11.2 days and typically aggregates up to 4.57" (116mm) of snow.

How many days does it snow in December?

In December, it is snowing for 11.2 days. Throughout December, 4.57" (116mm) of snow is accumulated.

What is the month with the shortest days in Glennallen?

December has the shortest days of the year, with an average of 5h and 18min of daylight.

How many hours of daylight does Glennallen have in December?

In Glennallen, the average day length in December is 5h and 18min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 9:38 am and sunset at 3:24 pm. On the last day of the month, sunrise is at 10:06 am and sunset at 3:25 pm AKST.

What is the month with the least sunshine?

January and December, with an average of 3.9h of sunshine, are months with the least sunshine.

How many hours of sunshine does Glennallen have in December?

In December, the average sunshine duration is 3.9h.

What are the months with the lowest UV index?

The months with the lowest UV index in Glennallen are January through April, September through December, with an average maximum UV index of 2.

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe 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
Glennallen, AK

Average temperature in December - Glennallen, AK
  • Average high temperature in December: 11.5°F

The warmest month (with the highest average high temperature) is July (67.5°F).
The month with the lowest average high temperature is January (9.1°F).

  • Average low temperature in December: 0.9°F

The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is January (-1.8°F).

Average pressure in December
Glennallen, AK

Average pressure in December - Glennallen, AK
  • Average pressure in December: 29.78"Hg

The month with the highest atmospheric pressure is July (29.95"Hg).
The months with the lowest atmospheric pressure are September, October, November and December (29.78"Hg).

Average wind speed in December
Glennallen, AK

Average wind speed in December - Glennallen, AK
  • Average wind speed in December: 4.5mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest months (with the lowest average wind speed) are January and December (4.5mph).

Average humidity in December
Glennallen, AK

Average humidity in December - Glennallen, AK
  • Average humidity in December: 89%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is June (57%).

Average rainfall in December
Glennallen, AK

Average rainfall in December - Glennallen, AK
  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is August (0.91").
The driest month (with the least rainfall) is April (0.2").

Average rainfall days in December
Glennallen, AK

Average rainfall days in December - Glennallen, AK
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is August (11.3 days).
The months with the least rainy days are February and November (3.7 days).

Average snowfall in December
Glennallen, AK

Average snowfall in December - Glennallen, AK
  • Average snowfall in December: 4.57"

The month with the highest snowfall is December (4.57").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Glennallen, AK

Average snowfall days in December - Glennallen, AK
  • Average snowfall days in December: 11.2 days

The month with the highest number of snowfall days is December (11.2 days).
The months with the least snowfall days are June and July (0 days).

Average daylight in December /
Average sunshine in December
Glennallen, AK

Average daylight in December / Average sunshine in December - Glennallen, AK
  • Average daylight in December: 5h and 2min

The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is June (Average sunshine: 14h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).

Average sunshine days in December
Glennallen, AK

Average sunshine days in December - Glennallen, AK
  • Average sunshine days in December: 20.4 days

The month with the most sunshine days is March (24.2 days).
The month with the least sunshine days is August (17.3 days).

Average UV index in December
Glennallen, AK

Average UV index in December - Glennallen, AK
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, September, October, November and December (UV index 2).

Average cloud cover in December
Glennallen, AK

Average cloud cover in December - Glennallen, AK
  • Average cloud cover in December: 43

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Glennallen, AK

Average visibility in December - Glennallen, AK
  • Average visibility in December: 5mi

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

Glennallen, Alaska, USA

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