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 varying between 10°F (-12.2°C) and 18.1°F (-7.7°C).

Temperature

December reports an average high-temperature of a still freezing cold 18.1°F (-7.7°C), slightly varied from November's 22.3°F (-5.4°C). Tyonek, during December nights, experiences a subtle shift to a low average of 10°F (-12.2°C) from the day's heat.

Humidity

The average relative humidity in December is 84%.

Rainfall

In Tyonek, in December, it is raining for 4.4 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, there are 139.5 rainfall days, and 31.89" (810mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. December is the month with the most snowfall. Snow falls for 17.7 days and accumulates 24.17" (614mm) of snow.

Daylight

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

Sunshine

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

UV index

March, October and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Jun 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The average high-temperature and low-temperature during December are 18.1°F (-7.7°C) and 10°F (-12.2°C) respectively.

What is the average humidity in December?

The average relative humidity in December is 84%.

How much does it rain in December?

In Tyonek, during December, the rain falls for 4.4 days and regularly aggregates up to 3.19" (81mm) of precipitation.

When does it snow the most?

December is the month with the most snowfall. Snow falls for 17.7 days and accumulates 24.17" (614mm) of snow.

How much does it snow in December?

In Tyonek, during December, snow falls for 17.7 days and regularly aggregates up to 24.17" (614mm) of snow.

What is the month with the shortest days in Tyonek?

With an average of 5h and 42min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

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

When are sunrise and sunset in December?

On the first day of December, 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?

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

How many hours of sunshine does Tyonek have in December?

In Tyonek, the average sunshine duration in December is 2.8h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In Tyonek, the average daily maximum UV index in December 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Tyonek, Alaska, USA

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