December weather forecast and climate
Orca, AK

Weather in December

December, the first month of the winter, in Orca, is still a freezing cold month, with average temperature fluctuating between 26.2°F (-3.2°C) and 31.5°F (-0.3°C).

Temperature

In December, the average high-temperature is almost the same as in November - a subzero cold 31.5°F (-0.3°C). The average low-temperature, in Orca, is 26.2°F (-3.2°C).

Humidity

The average relative humidity is 81%.

Rainfall

In December, in Orca, Alaska, the rain falls for 14.5 days. Throughout December, 8.98" (228mm) of precipitation is accumulated. Throughout the year, in Orca, there are 191.3 rainfall days, and 72.4" (1839mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. December is the month with the most snowfall in Orca. Snow falls for 12.9 days and accumulates 17.76" (451mm) of snow.

Daylight

The month with the shortest days in Orca is December, with an average of 5.8h of daylight.

Sunshine

December has the least sunshine of the year in Orca, Alaska, with an average of 2.1h of sunshine.

UV index

Months with the lowest UV index are November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 1 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Orca?

The average high-temperature, in December, is 31.5°F (-0.3°C), while the average low-temperature is 26.2°F (-3.2°C).

What is the average humidity in December in Orca?

In December, the average relative humidity in Orca is 81%.

How much does it rain in Orca in December?

In December, the rain falls for 14.5 days. Throughout December, 8.98" (228mm) of precipitation is accumulated.

How much does it snow in Orca in December?

In Orca, in December, during 12.9 snowfall days, 17.76" (451mm) of snow is typically accumulated.

When does it snow the most in Orca?

December is the month with the most snowfall in Orca, Alaska. Snow falls for 12.9 days and accumulates 17.76" (451mm) of snow.

What is the month with the shortest days in Orca?

With an average of 5.8h of daylight, December has the shortest days of the year in Orca, Alaska.

How many hours of daylight does Orca have in December?

The average length of the day in December is 5.8h.

What is the month with the least sunshine in Orca?

The month with the least sunshine is December, with an average of 2.1h of sunshine.

How long on average sun shines in December in Orca?

In December, the average sunshine is 2.1h.

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

Months with the lowest UV index in Orca are November and December, with an average maximum UV index of 1.

What is the UV index reading in December in Orca?

The average daily maximum UV index in December in Orca, Alaska, is 1. A UV Index value of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.

Average temperature in December
Orca, AK

Average temperature in December - Orca, AK
  • Average high temperature in December: 31.5°F

The warmest month (with the highest average high temperature) is July (58.6°F).
The month with the lowest average high temperature is January (30.2°F).

  • Average low temperature in December: 26.2°F

The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in December
Orca, AK

Average pressure in December - Orca, AK
  • Average pressure in December: 29.68"

The month with the highest atmospheric pressure is July (30").
The month with the lowest atmospheric pressure is November (29.65").

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Average wind speed in December
Orca, AK

Average wind speed in December - Orca, AK
  • Average wind speed in December: 12mph

The windiest months (with the highest average wind speed) are January and November (12.1mph).
The calmest month (with the lowest average wind speed) is June (5.2mph).

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Average humidity in December
Orca, AK

Average humidity in December - Orca, AK
  • Average humidity in December: 81%

The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in December
Orca, AK

Average rainfall in December - Orca, AK
  • Average rainfall in December: 8.98"

The wettest month (with the highest rainfall) is October (9.09").
The driest month (with the least rainfall) is June (2.72").

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Average rainfall days in December
Orca, AK

Average rainfall days in December - Orca, AK
  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is August (21 days).
The month with the least rainy days is February (9.6 days).

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Average snowfall in December
Orca, AK

Average snowfall in December - Orca, AK
  • Average snowfall in December: 17.76"

The month with the highest snowfall is December (17.76").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Orca, AK

Average snowfall days in December - Orca, AK
  • Average snowfall days in December: 12.9 days

The month with the highest number of snowfall days is December (12.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Orca, AK
  • Average daylight in December: 5.8h

The month with the longest days is June (Average daylight: 18.9h).
The month with the shortest days is December (Average daylight: 5.8h).

  • Average sunshine in December: 2.1h

Months with the most sunshine are May, June and July (Average sunshine: 7.6h).
The month with the least sunshine is December (Average sunshine: 2.1h).

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Average sunshine days in December
Orca, AK

Average sunshine days in December - Orca, AK
  • Average sunshine days in December: 9.3 days

The month with the most sunshine days is July (12.1 days).
The month with the least sunshine days is September (8 days).

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Average UV index in December
Orca, AK

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

The month with the highest UV index is July (UV index 4).
Months with the lowest UV index are November and December (UV index 1).

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Average cloud cover in December
Orca, AK

Average cloud cover in December - Orca, AK
  • Average cloud cover in December: 68

The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is May (Cloud cover 57).

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Average visibility in December
Orca, AK

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

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

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