December weather forecast
Whetstone, AZ

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Weather in December

December, the first month of the winter in Whetstone, is still a mild month, with temperature in the range of an average high of 57.7°F (14.3°C) and an average low of 38.5°F (3.6°C).

Temperature

December is the coldest month of the year, registering average temperatures as high as 57.7°F (14.3°C) and as low as 38.5°F (3.6°C).

Humidity

December is the most humid month, with an average relative humidity of 48%.

Rainfall

In Whetstone, in December, during 5.9 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 76.9 rainfall days, and 10.28" (261mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, there are 1.4 snowfall days, and 1.69" (43mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 6min of daylight.
On the first day of December, sunrise is at 7:03 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:28 pm MST.

Sunshine

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

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index, 3 in December, converts into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

December is Whetstone's coldest month, registering average high temperatures of 57.7°F (14.3°C) and lows of 38.5°F (3.6°C).

What is the average December temperature?

The average high-temperature, in December, in Whetstone, is 57.7°F (14.3°C), while the average low-temperature is 38.5°F (3.6°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is evaluated at 86°F (30°C).

What is the most humid month?

With an average relative humidity of 48%, December is the most humid month.

What is the average humidity in December?

The average relative humidity in December is 48%.

How many days does it rain in December?

In Whetstone, in December, it is raining for 5.9 days, with typically 0.63" (16mm) of accumulated precipitation.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 0.51" (13mm) of snow.

What is the month with the shortest days?

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 Whetstone, the average day length in December is 10h and 7min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:28 pm MST.

What is the month with the least sunshine?

The month with the least sunshine in Whetstone is December, with an average of 6.9h of sunshine.

How long on average sun shines in December?

The average sunshine duration in December is 6.9h.

When is the lowest UV index?

The months with the lowest UV index are January, November and December, with an average maximum UV index of 3.

What is the UV index intensity in December?

In Whetstone, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Whetstone, AZ

Average temperature in December - Whetstone, AZ
  • Average high temperature in December: 57.7°F

The warmest month (with the highest average high temperature) is June (92.8°F).
The month with the lowest average high temperature is December (57.7°F).

  • Average low temperature in December: 38.5°F

The month with the highest average low temperature is July (71.8°F).
The coldest months (with the lowest average low temperature) are January and December (38.5°F).

Average pressure in December
Whetstone, AZ

Average pressure in December - Whetstone, AZ
  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
Whetstone, AZ

Average wind speed in December - Whetstone, AZ
  • Average wind speed in December: 6.3mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
Whetstone, AZ

Average humidity in December - Whetstone, AZ
  • Average humidity in December: 48%

The month with the highest relative humidity is December (48%).
The month with the lowest relative humidity is June (21%).

Average rainfall in December
Whetstone, AZ

Average rainfall in December - Whetstone, AZ
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is August (2.48").
The driest months (with the least rainfall) are April and May (0.12").

Average rainfall days in December
Whetstone, AZ

Average rainfall days in December - Whetstone, AZ
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is May (2.1 days).

Average snowfall in December
Whetstone, AZ

Average snowfall in December - Whetstone, AZ
  • Average snowfall in December: 0.51"

The month with the highest snowfall is February (0.79").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Whetstone, AZ

Average snowfall days in December - Whetstone, AZ
  • Average snowfall days in December: 0.4 days

The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in December / Average sunshine in December - Whetstone, 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: 6h and 5min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

Average sunshine days in December
Whetstone, AZ

Average sunshine days in December - Whetstone, AZ
  • Average sunshine days in December: 24.4 days

The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (9.4 days).

Average UV index in December
Whetstone, AZ

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

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

Average cloud cover in December
Whetstone, AZ

Average cloud cover in December - Whetstone, AZ
  • Average cloud cover in December: 20

The months with the most cloud cover are July and December (Cloud cover 20).
The month with the least cloud cover is May (Cloud cover 7).

Average visibility in December
Whetstone, AZ

Average visibility in December - Whetstone, 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).

Whetstone, Arizona, USA

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