December weather forecast
Delta Junction, AK

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Weather in December

December comes with the coldest temperature averages ranging between a chilly 9.1°F (-12.7°C) to an even colder -1.5°F (-18.6°C). Coupled with this, the extended snowfall under the diminishing daylight hours of only 4.4, gives a distinct winter wonderland feel to Delta Junction. The extended cold, along with 8.1 snowfall days, ensures a breathtaking ice-capped landscape. Despite being the coldest, December is one of the most picturesque times of the year. Delta Junction, in all its icy glory, welcomes the end of the year with a blanket of pristine snow.

Temperature

As November turns into December, the average high-temperatures rest at a frigid cold 9.1°F (-12.7°C), showing a minor variation from the prior month. December nights in Delta Junction cool down to an average low-temperature of -1.5°F (-18.6°C).

Humidity

In December, the average relative humidity is 86%.

Rainfall

In December, in Delta Junction, Alaska, the rain falls for 2.4 days. Throughout December, 0.31" (8mm) of precipitation is accumulated. In Delta Junction, during the entire year, the rain falls for 70.4 days and collects up to 7.56" (192mm) of precipitation.

Snowfall

Months with snowfall are January through May, August through December. In Delta Junction, during December, snow falls for 8.1 days and regularly aggregates up to 2.32" (59mm) of snow. In Delta Junction, Alaska, during the entire year, snow falls for 56.2 days and aggregates up to 18.66" (474mm) of snow.

Daylight

December has the shortest days of the year in Delta Junction, Alaska, with an average of 4h and 24min of daylight.
On the first day of the month, sunrise is at 10:01 am and sunset at 3:02 pm. On the last day of December, sunrise is at 10:32 am and sunset at 2:59 pm AKST.

Sunshine

The month with the least sunshine is December, with an average of 2.3h of sunshine.

UV index

January through March, September through December, with an average maximum UV index of 2, are months with the lowest UV index in Delta Junction, Alaska. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

How cold is December in Delta Junction?

The high-temperature during December is 9.1°F (-12.7°C) and the low-temperature is -1.5°F (-18.6°C).

What is the average humidity in December in Delta Junction?

In December, the average relative humidity in Delta Junction, Alaska, is 86%.

How much does it rain in Delta Junction in December?

In Delta Junction, during December, the rain falls for 2.4 days and regularly aggregates up to 0.31" (8mm) of precipitation.

How much does it snow in Delta Junction in December?

In December, in Delta Junction, it is snowing for 8.1 days. Throughout December, 2.32" (59mm) of snow is accumulated.

What is the month with the shortest days in Delta Junction?

The month with the shortest days in Delta Junction, Alaska, is December, with an average of 4h and 24min of daylight.

How many hours of daylight does Delta Junction have in December?

The average day length in December is 4h and 26min.

What time are sunrise and sunset in December in Delta Junction?

In December, on the first day of the month, sunrise is at 10:01 am and sunset at 3:02 pm. On the last day of the month, in Delta Junction, Alaska, sunrise is at 10:32 am and sunset at 2:59 pm AKST.

What is the month with the least sunshine in Delta Junction?

The month with the least sunshine in Delta Junction is December, with an average of 2.3h of sunshine.

How many hours of sunshine does Delta Junction have in December?

In December, the average sunshine duration in Delta Junction, Alaska, is 2.3h.

What are the months with the lowest UV index in Delta Junction?

January through March, September through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December in Delta Junction?

The average daily maximum UV index in December in Delta Junction is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to 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
Delta Junction, AK

Average temperature in December - Delta Junction, AK
  • Average high temperature in December: 9.1°F

The warmest month (with the highest average high temperature) is July (69.8°F).
The month with the lowest average high temperature is January (5.4°F).

  • Average low temperature in December: -1.5°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 (-5.8°F).

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Average pressure in December
Delta Junction, AK

Average pressure in December - Delta Junction, AK
  • Average pressure in December: 29.85"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).

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Average wind speed in December
Delta Junction, AK

Average wind speed in December - Delta Junction, AK
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

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Average humidity in December
Delta Junction, AK

Average humidity in December - Delta Junction, AK
  • Average humidity in December: 86%

The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is May (51%).

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Average rainfall in December
Delta Junction, AK

Average rainfall in December - Delta Junction, AK
  • Average rainfall in December: 0.31"

The wettest month (with the highest rainfall) is August (1.57").
The driest month (with the least rainfall) is February (0.24").

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Average rainfall days in December
Delta Junction, AK

Average rainfall days in December - Delta Junction, AK
  • Average rainfall days in December: 2.4 days

The month with the highest number of rainy days is August (12.3 days).
The month with the least rainy days is November (1.7 days).

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Average snowfall in December
Delta Junction, AK

Average snowfall in December - Delta Junction, AK
  • Average snowfall in December: 2.32"

The months with the highest snowfall are March and October (2.99").
The months with the least snowfall are June and July (0").

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Average snowfall days in December
Delta Junction, AK

Average snowfall days in December - Delta Junction, AK
  • Average snowfall days in December: 8.1 days

The month with the highest number of snowfall days is November (9.6 days).
The months with the least snowfall days are June and July (0 days).

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Average daylight in December /
Average sunshine in December
Delta Junction, AK

Average daylight in December / Average sunshine in December - Delta Junction, AK
  • Average daylight in December: 4h and 2min

The month with the longest days is June (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 4h and 24min).

  • Average sunshine in December: 2h and 2min

The month with the most sunshine is June (Average sunshine: 13h and 24min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).

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Average sunshine days in December
Delta Junction, AK

Average sunshine days in December - Delta Junction, AK
  • Average sunshine days in December: 23.5 days

The months with the most sunshine days are January and December (23.5 days).
The month with the least sunshine days is August (17.4 days).

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Average UV index in December
Delta Junction, AK

Average UV index in December - Delta Junction, AK
  • Average UV index in December: 2

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, September, October, November and December (UV index 2).

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Average cloud cover in December
Delta Junction, AK

Average cloud cover in December - Delta Junction, AK
  • Average cloud cover in December: 43

The months with the most cloud cover are March and November (Cloud cover 45).
The month with the least cloud cover is May (Cloud cover 35).

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Average visibility in December
Delta Junction, AK

Average visibility in December - Delta Junction, 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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Delta Junction, Alaska, USA

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