December weather forecast
Olnes, AK

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Weather in December

The first month of the winter, December, is still an extremely cold month in Olnes, Alaska, with an average temperature varying between -4.9°F (-20.5°C) and 5.9°F (-14.5°C).

Temperature

December brings a slight decrease in temperature, down from an extreme cold 11.5°F (-11.4°C) in November to an extremely cold 5.9°F (-14.5°C). In the month of December, the nighttime temperature in Olnes dips to a steady average of -4.9°F (-20.5°C).

Humidity

In Olnes, the average relative humidity in December is 92%.

Rainfall

In Olnes, in December, during 3.2 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 100.5 rainfall days, and 10.87" (276mm) of precipitation is accumulated.

Snowfall

January through May, August through December are months with snowfall. In Olnes, in December, snow falls for 11.4 days, with typically accumulated 2.72" (69mm) of snow. Throughout the year, there are 74.3 snowfall days, and 24.49" (622mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 3h and 48min of daylight.
On the first day of the month, sunrise is at 10:24 am and sunset at 2:55 pm. On the last day of December, sunrise is at 10:58 am and sunset at 2:49 pm AKST.

Sunshine

The month with the least sunshine is December, with an average of 2h of sunshine.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 1 suggests these recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold is it in December?

The average high-temperature and low-temperature during December are 5.9°F (-14.5°C) and -4.9°F (-20.5°C) respectively.

What is the average humidity in December?

The average relative humidity in December is 92%.

How much does it rain in December?

In Olnes, during December, the rain falls for 3.2 days and regularly aggregates up to 0.39" (10mm) of precipitation.

How many days does it snow in December?

In Olnes, in December, during 11.4 snowfall days, 2.72" (69mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 3h and 48min of daylight.

What is the average length of the day in December?

In Olnes, the average day length in December is 3h and 50min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 10:24 am and sunset at 2:55 pm. On the last day of the month, sunrise is at 10:58 am and sunset at 2:49 pm AKST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 2h of sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 2h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
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
Olnes, AK

Average temperature in December - Olnes, AK
  • Average high temperature in December: 5.9°F

The warmest month (with the highest average high temperature) is July (70.7°F).
The month with the lowest average high temperature is January (2.1°F).

  • Average low temperature in December: -4.9°F

The month with the highest average low temperature is July (50.5°F).
The coldest month (with the lowest average low temperature) is January (-9°F).

Average pressure in December
Olnes, AK

Average pressure in December - Olnes, AK
  • Average pressure in December: 29.86"Hg

The month with the highest atmospheric pressure is February (29.97"Hg).
The month with the lowest atmospheric pressure is September (29.77"Hg).

Average wind speed in December
Olnes, AK

Average wind speed in December - Olnes, AK
  • Average wind speed in December: 4.2mph

The windiest month (with the highest average wind speed) is May (5mph).
The calmest months (with the lowest average wind speed) are October, November and December (4.2mph).

Average humidity in December
Olnes, AK

Average humidity in December - Olnes, AK
  • Average humidity in December: 92%

The month with the highest relative humidity is March (93%).
The month with the lowest relative humidity is June (56%).

Average rainfall in December
Olnes, AK

Average rainfall in December - Olnes, AK
  • Average rainfall in December: 0.39"

The wettest month (with the highest rainfall) is August (2.44").
The driest month (with the least rainfall) is January (0.31").

Average rainfall days in December
Olnes, AK

Average rainfall days in December - Olnes, AK
  • Average rainfall days in December: 3.2 days

The month with the highest number of rainy days is August (16.4 days).
The month with the least rainy days is February (1.8 days).

Average snowfall in December
Olnes, AK

Average snowfall in December - Olnes, AK
  • Average snowfall in December: 2.72"

The month with the highest snowfall is November (6.5").
The months with the least snowfall are June and July (0").

Average snowfall days in December
Olnes, AK

Average snowfall days in December - Olnes, AK
  • Average snowfall days in December: 11.4 days

The month with the highest number of snowfall days is November (13.3 days).
The months with the least snowfall days are June and July (0 days).

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

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

The month with the longest days is June (Average daylight: 21h and 48min).
The month with the shortest days is December (Average daylight: 3h and 48min).

  • Average sunshine in December: 2h and 0min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).

Average sunshine days in December
Olnes, AK

Average sunshine days in December - Olnes, AK
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is April (12.2 days).

Average UV index in December
Olnes, AK

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

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).

Average cloud cover in December
Olnes, AK

Average cloud cover in December - Olnes, AK
  • Average cloud cover in December: 50

The months with the most cloud cover are March, April and November (Cloud cover 53).
The month with the least cloud cover is May (Cloud cover 39).

Average visibility in December
Olnes, AK

Average visibility in December - Olnes, 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, November and December (4mi).

Olnes, Alaska, USA

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