December weather forecast
Skull Valley, AZ

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Weather in December

December, the first month of the winter in Skull Valley, is still a chilly month, with an average temperature ranging between min 30.7°F (-0.7°C) and max 49.1°F (9.5°C).

Temperature

December is the month when Skull Valley experiences its coldest temperatures, averaging a high of 49.1°F (9.5°C) and a low of 30.7°F (-0.7°C).

Humidity

December is the most humid month, with an average relative humidity of 58%.

Rainfall

In Skull Valley, in December, during 4.8 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Skull Valley, during the entire year, the rain falls for 76.9 days and collects up to 16.46" (418mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. The month with the most snowfall is December, when snow falls for 3.5 days and typically aggregates up to 4.13" (105mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 7:19 am and sunset at 5:20 pm. On the last day of December, sunrise is at 7:37 am and sunset at 5:30 pm MST.

Sunshine

With an average of 6.7h of sunshine, December has the least sunshine of the year.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 2 in December leads to these recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

December proves to be the coldest month, recording an average maximum temperature of 49.1°F (9.5°C) and a minimum temperature of 30.7°F (-0.7°C).

What is the average December temperature?

December temperatures vary between a high-temperature of 49.1°F (9.5°C) and a low-temperature of 30.7°F (-0.7°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 86°F (30°C).

What is the most humid month?

The most humid month is December, with an average relative humidity of 58%.

What is the average humidity in December?

In Skull Valley, the average relative humidity in December is 58%.

How many days does it rain in December?

In Skull Valley, Arizona, during December, the rain falls for 4.8 days and regularly aggregates up to 1.02" (26mm) of precipitation.

When does it snow the most?

December is the month with the most snowfall. Snow falls for 3.5 days and accumulates 4.13" (105mm) of snow.

How many days does it snow in December?

In Skull Valley, in December, during 3.5 snowfall days, 4.13" (105mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length is 9h and 53min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:19 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:30 pm MST.

What is the month with the least sunshine?

With an average of 6.7h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December?

The average sunshine duration in December is 6.7h.

When is the lowest UV index?

With an average maximum UV index of 2, December is the month with the lowest UV index.

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Skull Valley, AZ

Average temperature in December - Skull Valley, AZ
  • Average high temperature in December: 49.1°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is December (49.1°F).

  • Average low temperature in December: 30.7°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).

Average pressure in December
Skull Valley, AZ

Average pressure in December - Skull Valley, AZ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in December
Skull Valley, AZ

Average wind speed in December - Skull Valley, AZ
  • Average wind speed in December: 5.9mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Skull Valley, AZ

Average humidity in December - Skull Valley, AZ
  • Average humidity in December: 58%

The month with the highest relative humidity is December (58%).
The month with the lowest relative humidity is June (23%).

Average rainfall in December
Skull Valley, AZ

Average rainfall in December - Skull Valley, AZ
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is July (4.33").
The driest month (with the least rainfall) is June (0.24").

Average rainfall days in December
Skull Valley, AZ

Average rainfall days in December - Skull Valley, AZ
  • Average rainfall days in December: 4.8 days

The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is June (2.3 days).

Average snowfall in December
Skull Valley, AZ

Average snowfall in December - Skull Valley, AZ
  • Average snowfall in December: 4.13"

The month with the highest snowfall is December (4.13").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Skull Valley, AZ

Average snowfall days in December - Skull Valley, AZ
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is December (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Skull Valley, AZ

Average daylight in December / Average sunshine in December - Skull Valley, AZ
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in December
Skull Valley, AZ

Average sunshine days in December - Skull Valley, AZ
  • Average sunshine days in December: 23.4 days

The month with the most sunshine days is May (26.8 days).
The month with the least sunshine days is August (12.8 days).

Average UV index in December
Skull Valley, AZ

Average UV index in December - Skull Valley, AZ
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in December
Skull Valley, AZ

Average cloud cover in December - Skull Valley, AZ
  • Average cloud cover in December: 24

The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).

Average visibility in December
Skull Valley, AZ

Average visibility in December - Skull Valley, AZ
  • Average visibility in December: 6mi

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

Skull Valley, Arizona, USA

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