December weather forecast
Nikiski, AK

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Weather in December

The first month of the winter, December, is still a freezing cold month in Nikiski, Alaska, with an average temperature ranging between max 27°F (-2.8°C) and min 21.2°F (-6°C).

Temperature

With the transition into December, Nikiski notes an average high-temperature of a still subzero cold 27°F (-2.8°C), closely resembling November. Nikiski maintains a near steady average temperature of 21.2°F (-6°C) during the nights of December, demonstrating little drop from daytime highs.

Humidity

In Nikiski, the average relative humidity in December is 85%.

Rainfall

In Nikiski, Alaska, in December, it is raining for 7.1 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 136.3 rainfall days, and 19.49" (495mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, September through December. December is the month with the most snowfall in Nikiski. Snow falls for 12.7 days and accumulates 8.74" (222mm) of snow.

Daylight

With an average of 5h and 48min of daylight, December has the shortest days of the year in Nikiski.
On the first day of the month, sunrise is at 9:47 am and sunset at 4:01 pm. On the last day of December, in Nikiski, sunrise is at 10:13 am and sunset at 4:03 pm AKST.

Sunshine

With an average of 2.9h of sunshine, December has the least sunshine of the year.

UV index

In December, the average daily maximum UV index in Nikiski, Alaska, is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

How cold is December in Nikiski?

Nikiski in December has an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 21.2°F (-6°C).

What is the average humidity in December in Nikiski?

In December, the average relative humidity is 85%.

How much does it rain in Nikiski in December?

In December, the rain falls for 7.1 days. Throughout December, 1.93" (49mm) of precipitation is accumulated.

When does it snow the most in Nikiski?

The month with the most snowfall in Nikiski, Alaska, is December, when snow falls for 12.7 days and typically aggregates up to 8.74" (222mm) of snow.

How many days does it snow in December in Nikiski?

In Nikiski, Alaska, in December, during 12.7 snowfall days, 8.74" (222mm) of snow is typically accumulated.

What is the month with the shortest days in Nikiski?

The month with the shortest days in Nikiski is December, with an average of 5h and 48min of daylight.

What is the average length of the day in December in Nikiski?

In Nikiski, the average day length in December is 5h and 49min.

What time are sunrise and sunset in December in Nikiski?

On the first day of December in Nikiski, sunrise is at 9:47 am and sunset at 4:01 pm. On the last day of the month, sunrise is at 10:13 am and sunset at 4:03 pm AKST.

What is the month with the least sunshine in Nikiski?

With an average of 2.9h of sunshine, December has the least sunshine of the year in Nikiski.

How long on average sun shines in December in Nikiski?

In Nikiski, Alaska, the average sunshine duration in December is 2.9h.

What is the UV index intensity in December in Nikiski?

In Nikiski, Alaska, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Nikiski, AK

Average temperature in December - Nikiski, AK
  • Average high temperature in December: 27°F

The warmest month (with the highest average high temperature) is July (61.3°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in December: 21.2°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 (18.3°F).

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Average pressure in December
Nikiski, AK

Average pressure in December - Nikiski, AK
  • Average pressure in December: 29.64"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.64"Hg).

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Average wind speed in December
Nikiski, AK

Average wind speed in December - Nikiski, AK
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is December (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in December
Nikiski, AK

Average humidity in December - Nikiski, AK
  • Average humidity in December: 85%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is May (69%).

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Average rainfall in December
Nikiski, AK

Average rainfall in December - Nikiski, AK
  • Average rainfall in December: 1.93"

The wettest month (with the highest rainfall) is October (2.87").
The driest month (with the least rainfall) is June (0.91").

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Average rainfall days in December
Nikiski, AK

Average rainfall days in December - Nikiski, AK
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is September (16.6 days).
The month with the least rainy days is February (5.5 days).

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Average snowfall in December
Nikiski, AK

Average snowfall in December - Nikiski, AK
  • Average snowfall in December: 8.74"

The month with the highest snowfall is December (8.74").
The months with the least snowfall are May, June, July and August (0").

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Average snowfall days in December
Nikiski, AK

Average snowfall days in December - Nikiski, AK
  • Average snowfall days in December: 12.7 days

The month with the highest number of snowfall days is December (12.7 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
Nikiski, AK

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

The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).

  • Average sunshine in December: 2h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).

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Average sunshine days in December
Nikiski, AK

Average sunshine days in December - Nikiski, AK
  • Average sunshine days in December: 14 days

The month with the most sunshine days is June (16.6 days).
The month with the least sunshine days is September (11.5 days).

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Average UV index in December
Nikiski, AK

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

The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in December
Nikiski, AK

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

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 44).

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Average visibility in December
Nikiski, AK

Average visibility in December - Nikiski, AK
  • Average visibility in December: 6mi

The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).

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Nikiski, Alaska, USA

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