December weather forecast
Glendale, AZ

The scenic and watery landscape of Glendale town in Arizona
The scenic and watery landscape of Glendale town in Arizona

Weather in December

The first month of the winter, December, is still a comfortable month in Glendale, Arizona, with an average temperature varying between 46.8°F (8.2°C) and 61.9°F (16.6°C).

Temperature

December is the coldest month, with an average high-temperature of 61.9°F (16.6°C) and an average low-temperature of 46.8°F (8.2°C).

Humidity

The most humid month is December, with an average relative humidity of 43%.

Rainfall

In Glendale, Arizona, during December, the rain falls for 6 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 59.7 rainfall days, and 8.23" (209mm) of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 58min of daylight.
On the first day of the month, sunrise is at 7:15 am and sunset at 5:20 pm. On the last day of December, in Glendale, sunrise is at 7:32 am and sunset at 5:30 pm MST.

Sunshine

With an average of 6.8h of sunshine, December has the least sunshine of the year in Glendale.

UV index

The month with the lowest UV index in Glendale is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 Glendale?

December is the coldest month, with an average high-temperature of 61.9°F (16.6°C) and an average low-temperature of 46.8°F (8.2°C).

What is the most humid month in Glendale?

With an average relative humidity of 43%, December is the most humid month in Glendale, Arizona.

What is the average humidity in December in Glendale?

The average relative humidity in December is 43%.

How many days does it rain in December in Glendale?

In Glendale, Arizona, during December, the rain falls for 6 days and regularly aggregates up to 0.75" (19mm) of precipitation.

What is the month with the shortest days in Glendale?

With an average of 9h and 58min of daylight, December has the shortest days of the year in Glendale, Arizona.

How many hours of daylight does Glendale have in December?

In Glendale, the average day length in December is 9h and 58min.

When are sunrise and sunset in December in Glendale?

In December, on the first day of the month, sunrise is at 7:15 am and sunset at 5:20 pm. On the last day of the month, in Glendale, Arizona, sunrise is at 7:32 am and sunset at 5:30 pm MST.

What is the month with the least sunshine in Glendale?

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

How long on average sun shines in December in Glendale?

In Glendale, the average sunshine duration in December is 6.8h.

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

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

How high is the UV index in December in Glendale?

In Glendale, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Glendale, AZ

Average temperature in December - Glendale, AZ
  • Average high temperature in December: 61.9°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 (61.9°F).

  • Average low temperature in December: 46.8°F

The month with the highest average low temperature is August (83.7°F).
The coldest month (with the lowest average low temperature) is December (46.8°F).

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Average pressure in December
Glendale, AZ

Average pressure in December - Glendale, AZ
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).

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Average wind speed in December
Glendale, AZ

Average wind speed in December - Glendale, AZ
  • Average wind speed in December: 4.6mph

The windiest months (with the highest average wind speed) are April and May (6.6mph).
The calmest month (with the lowest average wind speed) is December (4.6mph).

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Average humidity in December
Glendale, AZ

Average humidity in December - Glendale, AZ
  • Average humidity in December: 43%

The month with the highest relative humidity is December (43%).
The month with the lowest relative humidity is June (17%).

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Average rainfall in December
Glendale, AZ

Average rainfall in December - Glendale, AZ
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Glendale, AZ

Average rainfall days in December - Glendale, AZ
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is July (10.7 days).
The month with the least rainy days is June (1.1 days).

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

Average daylight in December / Average sunshine in December - Glendale, AZ
  • Average daylight in December: 9h and 58min

The month with the longest days is June (Average daylight: 14h and 20min).
The month with the shortest days is December (Average daylight: 9h and 58min).

  • Average sunshine in December: 6h and 48min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Glendale, AZ

Average sunshine days in December - Glendale, AZ
  • Average sunshine days in December: 24.3 days

The month with the most sunshine days is May (28.6 days).
The month with the least sunshine days is August (15.9 days).

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Average UV index in December
Glendale, AZ

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

The 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
Glendale, AZ

Average cloud cover in December - Glendale, 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
Glendale, AZ

Average visibility in December - Glendale, 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).

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