December weather forecast and climate
Mammoth, AZ

Weather in December

The first month of the winter, December, is also a moderate month in Mammoth, Arizona, with average temperature ranging between min 39.9°F (4.4°C) and max 58.1°F (14.5°C).

Temperature

December is the coldest month, with an average high-temperature of 58.1°F (14.5°C) and an average low-temperature of 39.9°F (4.4°C).

Humidity

The most humid month in Mammoth is December, with an average relative humidity of 50%.

Rainfall

In Mammoth, during December, the rain falls for 6.6 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 80.2 rainfall days, and 10.16" (258mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall in Mammoth.

Daylight

With an average of 10h of daylight, December has the shortest days of the year in Mammoth.

Sunshine

With an average of 6.9h of sunshine, December has the least sunshine of the year.

UV index

November and December, with an average maximum UV index of 3, are months with the lowest UV index in Mammoth. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the coldest month in Mammoth?

With an average high-temperature of 58.1°F (14.5°C) and an average low-temperature of 39.9°F (4.4°C), December is the coldest month.

What is the most humid month in Mammoth?

December is the most humid month, with an average relative humidity of 50%.

What is the average humidity in December in Mammoth?

In Mammoth, the average relative humidity in December is 50%.

How many days does it rain in December in Mammoth?

In December, in Mammoth, the rain falls for 6.6 days. Throughout December, 1.06" (27mm) of precipitation is accumulated.

When it does not snow in Mammoth?

March through December are months without snowfall in Mammoth.

Does it snow in Mammoth in December?

In Mammoth, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Mammoth?

December has the shortest days of the year in Mammoth, with an average of 10h of daylight.

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

In Mammoth, Arizona, the average length of the day in December is 10h.

What is the month with the least sunshine in Mammoth?

With an average of 6.9h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December in Mammoth?

The average sunshine in December in Mammoth is 6.9h.

What is the month with the lowest UV index in Mammoth?

Months with the lowest UV index in Mammoth are November and December, with an average maximum UV index of 3.

How high is the UV index in December in Mammoth?

In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in December
Mammoth, AZ

Average temperature in December - Mammoth, AZ
  • Average high temperature in December: 58.1°F

The warmest month (with the highest average high temperature) is June (93.9°F).
The month with the lowest average high temperature is December (58.1°F).

  • Average low temperature in December: 39.9°F

The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).

[Resources]

Average pressure in December
Mammoth, AZ

Average pressure in December - Mammoth, AZ
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.85").

[Resources]

Average wind speed in December
Mammoth, AZ

Average wind speed in December - Mammoth, AZ
  • Average wind speed in December: 5.6mph

The windiest months (with the highest average wind speed) are April and May (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in December
Mammoth, AZ

Average humidity in December - Mammoth, AZ
  • Average humidity in December: 50%

The month with the highest relative humidity is December (50%).
The month with the lowest relative humidity is June (20%).

[Resources]

Average rainfall in December
Mammoth, AZ

Average rainfall in December - Mammoth, AZ
  • Average rainfall in December: 1.06"

The wettest month (with the highest rainfall) is July (1.97").
The driest months (with the least rainfall) are May and June (0.12").

[Resources]

Average rainfall days in December
Mammoth, AZ

Average rainfall days in December - Mammoth, AZ
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is May (2 days).

[Resources]

Average snowfall in December
Mammoth, AZ

Average snowfall in December - Mammoth, AZ
  • Average snowfall in December: 0"

Months with the highest snowfall are January and February (0.04").
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

[Resources]

Average snowfall days in December
Mammoth, AZ

Average snowfall days in December - Mammoth, AZ
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.3 days).
Months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Mammoth, AZ

Average daylight in December / Average sunshine in December - Mammoth, AZ
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.9h

The month with the most sunshine is August (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.9h).

[Resources]

Average sunshine days in December
Mammoth, AZ

Average sunshine days in December - Mammoth, AZ
  • Average sunshine days in December: 23.5 days

The month with the most sunshine days is May (28.7 days).
The month with the least sunshine days is July (10 days).

[Resources]

Average UV index in December
Mammoth, AZ

Average UV index in December - Mammoth, AZ
  • Average UV index in December: 3

Months with the highest UV index are May, June, July and August (UV index 7).
Months with the lowest UV index are November and December (UV index 3).

[Resources]

Average cloud cover in December
Mammoth, AZ

Average cloud cover in December - Mammoth, AZ
  • Average cloud cover in December: 21

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 7).

[Resources]

Average visibility in December
Mammoth, AZ

Average visibility in December - Mammoth, AZ
  • Average visibility in December: 6mi

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location