December weather forecast
Green Valley, AZ

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Weather in December

The first month of the winter, December, is still a comfortable month in Green Valley, Arizona, with an average temperature fluctuating between 61.7°F (16.5°C) and 43°F (6.1°C).

Temperature

In Green Valley, the lowest average temperatures are observed in December, with a high of 61.7°F (16.5°C) and a low of 43°F (6.1°C).

Humidity

With an average relative humidity of 44%, December is the most humid month.

Rainfall

In December, in Green Valley, Arizona, the rain falls for 4.5 days. Throughout December, 0.35" (9mm) of precipitation is accumulated. Throughout the year, there are 61.6 rainfall days, and 5.87" (149mm) of precipitation is accumulated.

Snowfall

In Green Valley, snow does not fall in February through December.

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:06 am and sunset at 5:19 pm. On the last day of December, sunrise is at 7:24 am and sunset at 5:30 pm MST.

Sunshine

The month with the least sunshine in Green Valley is December, with an average of 7h of sunshine.

UV index

The months with the lowest UV index in Green Valley are November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 3 in December translates into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Frequently asked questions

What part of the year is the coldest in Green Valley?

The coldest month in Green Valley is December, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 43°F (6.1°C).

What is the temperature in December in Green Valley?

The high-temperature in Green Valley during December is 61.7°F (16.5°C) and the low-temperature is 43°F (6.1°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is appraised at 89.6°F (32°C).

What is the most humid month in Green Valley?

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

What is the average humidity in December in Green Valley?

In December, the average relative humidity is 44%.

How many days does it rain in December in Green Valley?

In Green Valley, during December, the rain falls for 4.5 days and regularly aggregates up to 0.35" (9mm) of precipitation.

When it does not snow in Green Valley?

In Green Valley, snow does not fall in February through December.

Does it snow in Green Valley in December?

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

What is the month with the shortest days in Green Valley?

The month with the shortest days is December, with an average of 10h and 6min of daylight.

What is the average length of the day in December in Green Valley?

In December, the average day length in Green Valley is 10h and 7min.

What time are sunrise and sunset in December in Green Valley?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:30 pm MST.

What is the month with the least sunshine in Green Valley?

The month with the least sunshine in Green Valley, Arizona, is December, with an average of 7h of sunshine.

How many hours of sunshine does Green Valley have in December?

The average sunshine duration in December is 7h.

When is the lowest UV index in Green Valley?

November and December, with an average maximum UV index of 3, are months with the lowest UV index in Green Valley, Arizona.

How high is the UV index in December in Green Valley?

In December, the average daily maximum UV index in Green Valley is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Green Valley, AZ

Average temperature in December - Green Valley, AZ
  • Average high temperature in December: 61.7°F

The warmest month (with the highest average high temperature) is June (95.5°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in December: 43°F

The month with the highest average low temperature is July (75.4°F).
The coldest month (with the lowest average low temperature) is December (43°F).

Average pressure in December
Green Valley, AZ

Average pressure in December - Green Valley, AZ
  • Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

Average wind speed in December
Green Valley, AZ

Average wind speed in December - Green Valley, AZ
  • Average wind speed in December: 6.5mph

The windiest months (with the highest average wind speed) are April and May (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
Green Valley, AZ

Average humidity in December - Green Valley, AZ
  • Average humidity in December: 44%

The month with the highest relative humidity is December (44%).
The months with the lowest relative humidity are May and June (21%).

Average rainfall in December
Green Valley, AZ

Average rainfall in December - Green Valley, AZ
  • Average rainfall in December: 0.35"

The wettest months (with the highest rainfall) are July and August (1.3").
The driest months (with the least rainfall) are April and May (0.12").

Average rainfall days in December
Green Valley, AZ

Average rainfall days in December - Green Valley, AZ
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is May (1.4 days).

Average snowfall in December
Green Valley, AZ

Average snowfall in December - Green Valley, AZ
  • Average snowfall in December: 0"

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Green Valley, AZ

Average snowfall days in December - Green Valley, AZ
  • Average snowfall days in December: 0.1 days

The months with the highest number of snowfall days are January, September and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, October and November (0 days).

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

Average daylight in December / Average sunshine in December - Green Valley, AZ
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in December: 7h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in December
Green Valley, AZ

Average sunshine days in December - Green Valley, AZ
  • Average sunshine days in December: 25.8 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in December
Green Valley, AZ

Average UV index in December - Green Valley, AZ
  • Average UV index in December: 3

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

Average cloud cover in December
Green Valley, AZ

Average cloud cover in December - Green Valley, AZ
  • Average cloud cover in December: 19

The months with the most cloud cover are July and December (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 7).

Average visibility in December
Green Valley, AZ

Average visibility in December - Green 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).

Green Valley, Arizona, USA

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