December weather forecast and climate
Mesa, AZ

The scenic city of Mesa in Arizona, with a view of the famous well-manicured golf course near the Red Mountain range
The scenic city of Mesa in Arizona, with a view of the famous well-manicured golf course near the Red Mountain range

Weather in December

The first month of the winter, December, is still a comfortable month in Mesa, Arizona, with average temperature varying between 62.4°F (16.9°C) and 46.6°F (8.1°C).

Temperature

December is the coldest month, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 46.6°F (8.1°C).

Humidity

December is the most humid month in Mesa, Arizona, with an average relative humidity of 44%.

Rainfall

In December, in Mesa, the rain falls for 6.8 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. Throughout the year, in Mesa, Arizona, there are 60.2 rainfall days, and 7.91" (201mm) of precipitation is accumulated.

Daylight

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

Sunshine

The month with the least sunshine is December, with an average of 6.8h of sunshine.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
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FAQ

What is the coldest month in Mesa?

December is the coldest month in Mesa, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 46.6°F (8.1°C).

What is the temperature in December in Mesa?

In December, in Mesa, Arizona, the average high-temperature is 62.4°F (16.9°C), and the average low-temperature is 46.6°F (8.1°C).

What is the most humid month in Mesa?

December is the most humid month in Mesa, Arizona, with an average relative humidity of 44%.

What is the average humidity in December in Mesa?

In Mesa, Arizona, the average relative humidity in December is 44%.

How much does it rain in Mesa in December?

In Mesa, Arizona, in December, it is raining for 6.8 days, with typically 0.94" (24mm) of accumulated precipitation.

What is the month with the shortest days in Mesa?

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

How many hours of daylight does Mesa have in December?

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

What is the month with the least sunshine in Mesa?

December has the least sunshine of the year in Mesa, Arizona, with an average of 6.8h of sunshine.

How long on average sun shines in December in Mesa?

In Mesa, the average sunshine in December is 6.8h.

When is the lowest UV index in Mesa?

The month with the lowest UV index in Mesa is December, with an average maximum UV index of 3.

How high is the UV index in December in Mesa?

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

Average temperature in December
Mesa, AZ

Average temperature in December - Mesa, AZ
  • Average high temperature in December: 62.4°F

The warmest month (with the highest average high temperature) is July (101.8°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in December: 46.6°F

The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).

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Average pressure in December
Mesa, AZ

Average pressure in December - Mesa, 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 (29.82").

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Average wind speed in December
Mesa, AZ

Average wind speed in December - Mesa, AZ
  • Average wind speed in December: 4.5mph

The windiest months (with the highest average wind speed) are April and May (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).

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Average humidity in December
Mesa, AZ

Average humidity in December - Mesa, AZ
  • Average humidity in December: 44%

The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (17%).

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Average rainfall in December
Mesa, AZ

Average rainfall in December - Mesa, AZ
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Mesa, AZ

Average rainfall days in December - Mesa, AZ
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is July (10.6 days).
The month with the least rainy days is June (1.2 days).

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

Average daylight in December / Average sunshine in December - Mesa, 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: 6.8h

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in December
Mesa, AZ

Average sunshine days in December - Mesa, AZ
  • Average sunshine days in December: 23.6 days

The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (17.6 days).

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Average UV index in December
Mesa, AZ

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

Months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Mesa, AZ

Average cloud cover in December - Mesa, 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 5).

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Average visibility in December
Mesa, AZ

Average visibility in December - Mesa, 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).

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