December weather forecast
McCarthy, AK

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Weather in December

The first month of the winter, December, is also a subzero cold month in McCarthy, Alaska, with an average temperature fluctuating between 2.1°F (-16.6°C) and 14°F (-10°C).

Temperature

Entering December, the average high-temperature is recorded at a still freezing cold 14°F (-10°C), exhibiting a minimal shift from November's 18.5°F (-7.5°C). In the month of December, the average temperature dips to an arctic cold 2.1°F (-16.6°C) during the night.

Humidity

The months with the highest humidity are January, March, April and December, with an average relative humidity of 82%.

Rainfall

In McCarthy, Alaska, in December, during 8.9 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In McCarthy, Alaska, during the entire year, the rain falls for 151.8 days and collects up to 14.88" (378mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. December is the month with the most snowfall in McCarthy. Snow falls for 17.2 days and accumulates 9.37" (238mm) of snow.

Daylight

With an average of 5h and 36min of daylight, December has the shortest days of the year.
On the first day of December in McCarthy, sunrise is at 9:21 am and sunset at 3:20 pm. On the last day of the month, sunrise is at 9:48 am and sunset at 3:22 pm AKST.

Sunshine

The month with the least sunshine in McCarthy is December, with an average of 4h of sunshine.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 1 in December interprets into the following advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is it in McCarthy in December?

McCarthy in December has an average high-temperature of 14°F (-10°C) and an average low-temperature of 2.1°F (-16.6°C).

What are the most humid months in McCarthy?

The months with the highest humidity in McCarthy are January, March, April and December, with an average relative humidity of 82%.

What is the average humidity in December in McCarthy?

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

How many days does it rain in December in McCarthy?

In McCarthy, Alaska, in December, it is raining for 8.9 days, with typically 1.34" (34mm) of accumulated precipitation.

What is the snowiest month in McCarthy?

December is the month with the most snowfall. Snow falls for 17.2 days and accumulates 9.37" (238mm) of snow.

How many days does it snow in December in McCarthy?

In McCarthy, in December, snow falls for 17.2 days, with typically accumulated 9.37" (238mm) of snow.

What is the month with the shortest days in McCarthy?

The month with the shortest days is December, with an average of 5h and 36min of daylight.

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

In McCarthy, the average day length in December is 5h and 33min.

When are sunrise and sunset in December in McCarthy?

In December, on the first day of the month, sunrise is at 9:21 am and sunset at 3:20 pm. On the last day of the month, in McCarthy, Alaska, sunrise is at 9:48 am and sunset at 3:22 pm AKST.

What is the month with the least sunshine in McCarthy?

The month with the least sunshine is December, with an average of 4h of sunshine.

How long on average sun shines in December in McCarthy?

The average sunshine duration in December in McCarthy is 4h.

What are the months with the lowest UV index in McCarthy?

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.

What is the UV index reading in December in McCarthy?

The average daily maximum UV index in December in McCarthy, Alaska, is 1. A UV Index of 2, and less, symbolizes a low health risk 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
McCarthy, AK

Average temperature in December - McCarthy, AK
  • Average high temperature in December: 14°F

The warmest month (with the highest average high temperature) is July (56.8°F).
The month with the lowest average high temperature is January (13.5°F).

  • Average low temperature in December: 2.1°F

The month with the highest average low temperature is July (43.2°F).
The coldest month (with the lowest average low temperature) is February (1°F).

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Average pressure in December
McCarthy, AK

Average pressure in December - McCarthy, AK
  • Average pressure in December: 29.79"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is November (29.76"Hg).

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Average wind speed in December
McCarthy, AK

Average wind speed in December - McCarthy, AK
  • Average wind speed in December: 4.6mph

The windiest months (with the highest average wind speed) are January and November (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity in December
McCarthy, AK

Average humidity in December - McCarthy, AK
  • Average humidity in December: 82%

The months with the highest relative humidity are January, March, April and December (82%).
The month with the lowest relative humidity is June (66%).

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Average rainfall in December
McCarthy, AK

Average rainfall in December - McCarthy, AK
  • Average rainfall in December: 1.34"

The wettest month (with the highest rainfall) is September (1.69").
The driest month (with the least rainfall) is April (0.71").

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Average rainfall days in December
McCarthy, AK

Average rainfall days in December - McCarthy, AK
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (8.4 days).

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Average snowfall in December
McCarthy, AK

Average snowfall in December - McCarthy, AK
  • Average snowfall in December: 9.37"

The month with the highest snowfall is December (9.37").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
McCarthy, AK

Average snowfall days in December - McCarthy, AK
  • Average snowfall days in December: 17.2 days

The month with the highest number of snowfall days is December (17.2 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
McCarthy, AK

Average daylight in December / Average sunshine in December - McCarthy, AK
  • Average daylight in December: 5h and 4min

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

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is June (Average sunshine: 14h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).

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Average sunshine days in December
McCarthy, AK

Average sunshine days in December - McCarthy, AK
  • Average sunshine days in December: 12.5 days

The month with the most sunshine days is March (15.8 days).
The month with the least sunshine days is August (9.7 days).

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Average UV index in December
McCarthy, AK

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

The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in December
McCarthy, AK

Average cloud cover in December - McCarthy, AK
  • Average cloud cover in December: 41

The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are March, May and June (Cloud cover 35).

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Average visibility in December
McCarthy, AK

Average visibility in December - McCarthy, 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, February, March, April, November and December (5mi).

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McCarthy, Alaska, USA

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