December weather forecast
Tyonek, AK

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Weather in December

The first month of the winter, December, is also a subzero cold month in Tyonek, Alaska, with an average temperature ranging between min 10°F (-12.2°C) and max 18.1°F (-7.7°C).

Temperature

The arrival of December brings an average high-temperature of a still freezing cold 18.1°F (-7.7°C), closely following the temperature pattern of November. Night temperatures in December in Tyonek exhibit a subtle decrease, settling at an average of 10°F (-12.2°C).

Humidity

In Tyonek, the average relative humidity in December is 84%.

Rainfall

In Tyonek, in December, during 4.4 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. In Tyonek, during the entire year, the rain falls for 139.5 days and collects up to 31.89" (810mm) of precipitation.

Snowfall

Months with snowfall in Tyonek are January through May, September through December. The month with the most snowfall is December, when snow falls for 17.7 days and typically aggregates up to 24.17" (614mm) of snow.

Daylight

December has the shortest days of the year, with an average of 5h and 42min of daylight.
On the first day of the month, sunrise is at 9:50 am and sunset at 3:57 pm. On the last day of December, in Tyonek, sunrise is at 10:17 am and sunset at 3:58 pm AKST.

Sunshine

With an average of 2.8h of sunshine, December has the least sunshine of the year in Tyonek, Alaska.

UV index

The months with the lowest UV index are March, October and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 1 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

How cold is it in Tyonek in December?

In Tyonek, 18.1°F (-7.7°C) is the average high-temperature and 10°F (-12.2°C) is the average low-temperature during December.

What is the average humidity in December in Tyonek?

The average relative humidity in December is 84%.

How many days does it rain in December in Tyonek?

In December, in Tyonek, Alaska, the rain falls for 4.4 days. Throughout December, 3.19" (81mm) of precipitation is accumulated.

What is the snowiest month in Tyonek?

The month with the most snowfall in Tyonek is December, when snow falls for 17.7 days and typically aggregates up to 24.17" (614mm) of snow.

How many days does it snow in December in Tyonek?

In Tyonek, Alaska, in December, snow falls for 17.7 days, with typically accumulated 24.17" (614mm) of snow.

What is the month with the shortest days in Tyonek?

The month with the shortest days in Tyonek, Alaska, is December, with an average of 5h and 42min of daylight.

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

In Tyonek, Alaska, the average day length in December is 5h and 41min.

When is the sunrise / sunset in December in Tyonek?

On the first day of December in Tyonek, sunrise is at 9:50 am and sunset at 3:57 pm. On the last day of the month, sunrise is at 10:17 am and sunset at 3:58 pm AKST.

What is the month with the least sunshine in Tyonek?

With an average of 2.8h of sunshine, December has the least sunshine of the year in Tyonek, Alaska.

How many hours of sunshine does Tyonek have in December?

The average sunshine duration in December in Tyonek is 2.8h.

When is the lowest UV index in Tyonek?

The months with the lowest UV index in Tyonek are March, October and December, with an average maximum UV index of 1.

What is the UV index reading in December in Tyonek?

In Tyonek, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's 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
Tyonek, AK

Average temperature in December - Tyonek, AK
  • Average high temperature in December: 18.1°F

The warmest month (with the highest average high temperature) is July (63.1°F).
The month with the lowest average high temperature is January (16.2°F).

  • Average low temperature in December: 10°F

The month with the highest average low temperature is July (47.1°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).

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Average pressure in December
Tyonek, AK

Average pressure in December - Tyonek, AK
  • Average pressure in December: 29.68"Hg

The month with the highest atmospheric pressure is July (29.95"Hg).
The month with the lowest atmospheric pressure is December (29.68"Hg).

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Average wind speed in December
Tyonek, AK

Average wind speed in December - Tyonek, AK
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

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Average humidity in December
Tyonek, AK

Average humidity in December - Tyonek, AK
  • Average humidity in December: 84%

The months with the highest relative humidity are March and April (86%).
The months with the lowest relative humidity are May and June (69%).

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Average rainfall in December
Tyonek, AK

Average rainfall in December - Tyonek, AK
  • Average rainfall in December: 3.19"

The wettest month (with the highest rainfall) is October (4.61").
The driest month (with the least rainfall) is June (1.38").

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Average rainfall days in December
Tyonek, AK

Average rainfall days in December - Tyonek, AK
  • Average rainfall days in December: 4.4 days

The month with the highest number of rainy days is August (20.2 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in December
Tyonek, AK

Average snowfall in December - Tyonek, AK
  • Average snowfall in December: 24.17"

The month with the highest snowfall is December (24.17").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Tyonek, AK

Average snowfall days in December - Tyonek, AK
  • Average snowfall days in December: 17.7 days

The month with the highest number of snowfall days is December (17.7 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
Tyonek, AK

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

The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).

  • Average sunshine in December: 2h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).

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Average sunshine days in December
Tyonek, AK

Average sunshine days in December - Tyonek, AK
  • Average sunshine days in December: 13.2 days

The month with the most sunshine days is January (15.8 days).
The month with the least sunshine days is September (8.4 days).

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Average UV index in December
Tyonek, AK

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

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are March, October and December (UV index 1).

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Average cloud cover in December
Tyonek, AK

Average cloud cover in December - Tyonek, AK
  • Average cloud cover in December: 59

The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is June (Cloud cover 48).

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Average visibility in December
Tyonek, AK

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

The months with the highest visibility are May, June and July (6mi).
The month with the lowest visibility is April (4mi).

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Tyonek, Alaska, USA

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