December weather forecast
Calva, AZ

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Weather in December

December, the first month of the winter in Calva, is still a cool month, with an average temperature ranging between min 36.9°F (2.7°C) and max 55.2°F (12.9°C).

Temperature

The month of December sees the lowest average temperatures, reaching 55.2°F (12.9°C) at the peak and 36.9°F (2.7°C) at the low.

Humidity

December is the most humid month, with an average relative humidity of 53%.

Rainfall

In December, the rain falls for 7.5 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. Throughout the year, in Calva, there are 75.1 rainfall days, and 8.82" (224mm) of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows in Calva. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 1.1 snowfall days, and 0.2" (5mm) of snow is accumulated.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:06 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:24 pm MST.

Sunshine

With an average of 6.7h of sunshine, December has the least sunshine of the year.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

December, having an average high-temperature of 55.2°F (12.9°C) and an average low-temperature of 36.9°F (2.7°C), is the coldest month.

What is the temperature in December?

The high-temperature during December is 55.2°F (12.9°C) and the low-temperature is 36.9°F (2.7°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is estimated at 86°F (30°C).

What is the most humid month?

With an average relative humidity of 53%, December is the most humid month in Calva.

What is the average humidity in December?

The average relative humidity in December is 53%.

How many days does it rain in December?

In Calva, in December, it is raining for 7.5 days, with typically 1.1" (28mm) of accumulated precipitation.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days?

The month with the shortest days in Calva is December, with an average of 10h and 0min of daylight.

What is the average length of the day in December?

In Calva, the average day length in December is 10h and 0min.

When are sunrise and sunset in December?

On the first day of December in Calva, sunrise is at 7:06 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:24 pm MST.

What is the month with the least sunshine in Calva?

December has the least sunshine of the year, with an average of 6.7h of sunshine.

How many hours of sunshine does Calva have in December?

In Calva, the average sunshine duration in December is 6.7h.

When is the lowest UV index?

With an average maximum UV index of 2, December is the month with the lowest UV index.

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
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
Calva, AZ

Average temperature in December - Calva, AZ
  • Average high temperature in December: 55.2°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (55.2°F).

  • Average low temperature in December: 36.9°F

The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is December (36.9°F).

Average pressure in December
Calva, AZ

Average pressure in December - Calva, AZ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in December
Calva, AZ

Average wind speed in December - Calva, AZ
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest months (with the lowest average wind speed) are August and December (5.2mph).

Average humidity in December
Calva, AZ

Average humidity in December - Calva, AZ
  • Average humidity in December: 53%

The month with the highest relative humidity is December (53%).
The month with the lowest relative humidity is June (21%).

Average rainfall in December
Calva, AZ

Average rainfall in December - Calva, AZ
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is August (1.22").
The driest month (with the least rainfall) is June (0.12").

Average rainfall days in December
Calva, AZ

Average rainfall days in December - Calva, AZ
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is June (2.9 days).

Average snowfall in December
Calva, AZ

Average snowfall in December - Calva, AZ
  • Average snowfall in December: 0.04"

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

Average snowfall days in December
Calva, AZ

Average snowfall days in December - Calva, AZ
  • Average snowfall days in December: 0.2 days

The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are April, May, June, July, August, October and November (0 days).

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

Average daylight in December / Average sunshine in December - Calva, AZ
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is August (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in December
Calva, AZ

Average sunshine days in December - Calva, AZ
  • Average sunshine days in December: 22.9 days

The month with the most sunshine days is May (26.8 days).
The month with the least sunshine days is July (13.1 days).

Average UV index in December
Calva, AZ

Average UV index in December - Calva, AZ
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in December
Calva, AZ

Average cloud cover in December - Calva, AZ
  • Average cloud cover in December: 23

The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 7).

Average visibility in December
Calva, AZ

Average visibility in December - Calva, 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).

Calva, Arizona, USA

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