December weather forecast and climate
Sterling, AK

Weather in December

December, the first month of the winter, in Sterling, is still a freezing cold month, with average temperature varying between 24.3°F (-4.3°C) and 16.9°F (-8.4°C).

Temperature

In December, the average high-temperature is relatively the same as in November - a still subzero cold 24.3°F (-4.3°C). In December, in Sterling, the average low-temperature is 16.9°F (-8.4°C).

Humidity

In Sterling, the average relative humidity is 89%.

Rainfall

In Sterling, during December, the rain falls for 7.7 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, there are 135.9 rainfall days, and 12.4" (315mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Sterling, during 13.1 snowfall days, 5.2" (132mm) of snow is typically accumulated. In Sterling, during the entire year, snow falls for 65.1 days, and aggregates up to 23.27" (591mm) of snow.

Daylight

December has the shortest days of the year, with an average of 5.9h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 3.3h of sunshine.

UV index

The average daily maximum UV index in Sterling, Alaska, is 2. 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 2 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Sterling?

The average high-temperature, in December, in Sterling, Alaska, is 24.3°F (-4.3°C), while the average low-temperature is 16.9°F (-8.4°C).

What is the average humidity in December in Sterling?

The average relative humidity in December in Sterling is 89%.

How much does it rain in Sterling in December?

In Sterling, Alaska, in December, it is raining for 7.7 days, with typically 1.26" (32mm) of accumulated precipitation.

How much does it snow in Sterling in December?

In Sterling, Alaska, in December, during 13.1 snowfall days, 5.2" (132mm) of snow is typically accumulated.

What is the month with the shortest days in Sterling?

With an average of 5.9h of daylight, December has the shortest days of the year in Sterling, Alaska.

How many hours of daylight does Sterling have in December?

In December, the average length of the day is 5.9h.

What is the month with the least sunshine in Sterling?

With an average of 3.3h of sunshine, December has the least sunshine of the year in Sterling.

How many hours of sunshine does Sterling have in December?

The average sunshine in December in Sterling, Alaska, is 3.3h.

What is the UV index intensity in December in Sterling?

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

Average temperature in December
Sterling, AK

Average temperature in December - Sterling, AK
  • Average high temperature in December: 24.3°F

The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is January (21.9°F).

  • Average low temperature in December: 16.9°F

The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in December
Sterling, AK

Average pressure in December - Sterling, AK
  • Average pressure in December: 29.64"

The month with the highest atmospheric pressure is July (29.96").
Months with the lowest atmospheric pressure are November and December (29.64").

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Average wind speed in December
Sterling, AK

Average wind speed in December - Sterling, AK
  • Average wind speed in December: 6mph

The windiest months (with the highest average wind speed) are November and December (6mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

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Average humidity in December
Sterling, AK

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

Months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (64%).

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Average rainfall in December
Sterling, AK

Average rainfall in December - Sterling, AK
  • Average rainfall in December: 1.26"

The wettest month (with the highest rainfall) is October (1.77").
The driest month (with the least rainfall) is May (0.55").

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Average rainfall days in December
Sterling, AK

Average rainfall days in December - Sterling, AK
  • Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is September (17.3 days).
The month with the least rainy days is February (6.3 days).

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Average snowfall in December
Sterling, AK

Average snowfall in December - Sterling, AK
  • Average snowfall in December: 5.2"

The month with the highest snowfall is February (5.31").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Sterling, AK

Average snowfall days in December - Sterling, AK
  • Average snowfall days in December: 13.1 days

The month with the highest number of snowfall days is December (13.1 days).
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
Sterling, AK

Average daylight in December / Average sunshine in December - Sterling, AK
  • Average daylight in December: 5.9h

The month with the longest days is June (Average daylight: 18.9h).
The month with the shortest days is December (Average daylight: 5.9h).

  • Average sunshine in December: 3.3h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 3.3h).

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Average sunshine days in December
Sterling, AK

Average sunshine days in December - Sterling, AK
  • Average sunshine days in December: 14.4 days

The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is September (11 days).

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Average UV index in December
Sterling, AK

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

Months with the highest UV index are June and July (UV index 4).
Months with the lowest UV index are February and November (UV index 1).

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Average cloud cover in December
Sterling, AK

Average cloud cover in December - Sterling, AK
  • Average cloud cover in December: 53

The month with the most cloud cover is December (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 45).

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Average visibility in December
Sterling, AK

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

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

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