December weather forecastArivaca, AZ

December

Weather in December

December, the first month of the winter in Arivaca, is also an enjoyable month, with an average temperature varying between 61.7°F (16.5°C) and 43°F (6.1°C).

Temperature

December, with an average high of 61.7°F (16.5°C) and a low of 43°F (6.1°C), signifies the coldest month of the year.

Humidity

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

Rainfall

In Arivaca, in December, it is raining for 4.5 days, with typically 0.35" (9mm) of accumulated precipitation. In Arivaca, during the entire year, the rain falls for 61.6 days and collects up to 5.87" (149mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

December has the shortest days of the year in Arivaca, with an average of 10h and 6min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 5:21 pm. On the last day of December, in Arivaca, sunrise is at 7:24 am and sunset at 5:32 pm MST.

Sunshine

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

UV index

The months with the lowest UV index 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 radiation for ordinary individuals.
Note: The maximum daily UV index of 3 in December converts into the following recommendations:
Act with care - The need to guard against sun damage is communicated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.

Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Arivaca's coldest month, December, generally records average temperatures ranging from a high of 61.7°F (16.5°C) to a low of 43°F (6.1°C).

The average high-temperature, in December, in Arivaca, is 61.7°F (16.5°C), while the average low-temperature is 43°F (6.1°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is appraised at 89.6°F (32°C).

The most humid month is December, with an average relative humidity of 44%.

In December, the average relative humidity in Arivaca, Arizona, is 44%.

In December, the rain falls for 4.5 days. Throughout December, 0.35" (9mm) of precipitation is accumulated.

February through December are months without snowfall in Arivaca.

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

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

In December, the average day length in Arivaca, Arizona, is 10h and 8min.

On the first day of December in Arivaca, sunrise is at 7:07 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:32 pm MST.

With an average of 7h of sunshine, December has the least sunshine of the year in Arivaca.

In December, the average sunshine duration in Arivaca, Arizona, is 7h.

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

In December, the average daily maximum UV index in Arivaca, Arizona, is 3. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

71.1°F

61.7°F

62.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.7mph

7.2mph

6.8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

27.5

25.8

27.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Arivaca, 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
Arivaca, 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
Arivaca, 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
Arivaca, 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
Arivaca, 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
Arivaca, 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
Arivaca, 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
Arivaca, 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
Arivaca, AZ

Average daylight in December: 10h and 6min

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
Arivaca, 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
Arivaca, 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
Arivaca, 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
Arivaca, 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).