December weather forecast
Ajo, AZ

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Weather in December

The first month of the winter, December, is still a comfortable month in Ajo, Arizona, with an average temperature varying between 63.1°F (17.3°C) and 47.7°F (8.7°C).

Temperature

December, noted for its average high-temperature of 63.1°F (17.3°C) and an average low-temperature of 47.7°F (8.7°C), is considered the coldest month.

Humidity

The most humid month is December, with an average relative humidity of 42%.

Rainfall

In Ajo, in December, during 5.4 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Ajo, Arizona, during the entire year, the rain falls for 58 days and collects up to 6.69" (170mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 10h and 6min of daylight.
On the first day of December in Ajo, sunrise is at 7:15 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:36 pm MST.

Sunshine

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

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: An average UV index of 3 in December transforms into this advice:
Adopt protective measures - It is advised to guard against sun damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

December is the coldest month, with an average high-temperature of 63.1°F (17.3°C) and an average low-temperature of 47.7°F (8.7°C).

What are the temperatures in December?

During December, Ajo experiences an average high-temperature of 63.1°F (17.3°C) and a low-temperature of 47.7°F (8.7°C).

What is the most humid month?

December is the most humid month, with an average relative humidity of 42%.

What is the average humidity in December?

In Ajo, the average relative humidity in December is 42%.

How much does it rain in December?

In Ajo, during December, the rain falls for 5.4 days and regularly aggregates up to 0.63" (16mm) of precipitation.

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 December, the average day length is 10h and 4min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:15 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:36 pm MST.

What is the month with the least sunshine?

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

How many hours of sunshine does Ajo have in December?

The average sunshine duration in December is 7h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In Ajo, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Ajo, AZ

Average temperature in December - Ajo, AZ
  • Average high temperature in December: 63.1°F

The warmest month (with the highest average high temperature) is July (102.4°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in December: 47.7°F

The month with the highest average low temperature is August (85.3°F).
The coldest month (with the lowest average low temperature) is December (47.7°F).

Average pressure in December
Ajo, AZ

Average pressure in December - Ajo, 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 (29.76"Hg).

Average wind speed in December
Ajo, AZ

Average wind speed in December - Ajo, AZ
  • Average wind speed in December: 5.3mph

The windiest months (with the highest average wind speed) are May and June (8.3mph).
The calmest months (with the lowest average wind speed) are January and December (5.3mph).

Average humidity in December
Ajo, AZ

Average humidity in December - Ajo, AZ
  • Average humidity in December: 42%

The month with the highest relative humidity is December (42%).
The month with the lowest relative humidity is June (17%).

Average rainfall in December
Ajo, AZ

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

The wettest month (with the highest rainfall) is July (1.5").
The driest months (with the least rainfall) are April, May and June (0.08").

Average rainfall days in December
Ajo, AZ

Average rainfall days in December - Ajo, AZ
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is May (1.3 days).

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

Average daylight in December / Average sunshine in December - Ajo, 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 June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in December
Ajo, AZ

Average sunshine days in December - Ajo, AZ
  • Average sunshine days in December: 25 days

The month with the most sunshine days is May (29.2 days).
The month with the least sunshine days is July (13.4 days).

Average UV index in December
Ajo, AZ

Average UV index in December - Ajo, 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).

Average cloud cover in December
Ajo, AZ

Average cloud cover in December - Ajo, AZ
  • Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in December
Ajo, AZ

Average visibility in December - Ajo, 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).

Ajo, Arizona, USA

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