December weather forecast
South Tucson, AZ

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Weather in December

December, the first month of the winter in South Tucson, is still a comfortable month, with an average temperature ranging between min 43°F (6.1°C) and max 60.8°F (16°C).

Temperature

South Tucson's coldest weather arrives in December, when temperatures average a high of 60.8°F (16°C) and a low of 43°F (6.1°C).

Humidity

With an average relative humidity of 45%, December is the most humid month.

Rainfall

In South Tucson, in December, it is raining for 6.2 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, there are 66.1 rainfall days, and 7.95" (202mm) of precipitation is accumulated.

Snowfall

In South Tucson, Arizona, snow does not fall in February through December.

Daylight

The month with the shortest days in South Tucson is December, 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 5:18 pm. On the last day of December, sunrise is at 7:24 am and sunset at 5:29 pm MST.

Sunshine

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

UV index

November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 3 during December translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

South Tucson's December weather reaches an average high of 60.8°F (16°C) and an average low of 43°F (6.1°C), making it the coldest month.

What are the temperatures in December?

December temperatures vary between a high-temperature of 60.8°F (16°C) and a low-temperature of 43°F (6.1°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 89.6°F (32°C).

What is the most humid month in South Tucson?

December is the most humid month, with an average relative humidity of 45%.

What is the average humidity in December?

In South Tucson, the average relative humidity in December is 45%.

How much does it rain in December?

In December, in South Tucson, the rain falls for 6.2 days. Throughout December, 0.83" (21mm) of precipitation is accumulated.

When it does not snow?

February through December are months without snowfall.

Does it snow in December?

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

What is the month with the shortest days?

December has the shortest days of the year, with an average of 10h and 6min of daylight.

How many hours of daylight does South Tucson have in December?

In December, the average day length is 10h and 5min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:29 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 South Tucson have in December?

In December, the average sunshine duration in South Tucson is 7h.

When is the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index 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
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
South Tucson, AZ

Average temperature in December - South Tucson, AZ
  • Average high temperature in December: 60.8°F

The warmest month (with the highest average high temperature) is June (96.6°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in December: 43°F

The month with the highest average low temperature is July (77°F).
The coldest months (with the lowest average low temperature) are January and December (43°F).

Average pressure in December
South Tucson, AZ

Average pressure in December - South Tucson, 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 (29.83"Hg).

Average wind speed in December
South Tucson, AZ

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

The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
South Tucson, AZ

Average humidity in December - South Tucson, AZ
  • Average humidity in December: 45%

The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (19%).

Average rainfall in December
South Tucson, AZ

Average rainfall in December - South Tucson, AZ
  • Average rainfall in December: 0.83"

The wettest month (with the highest rainfall) is July (1.42").
The driest month (with the least rainfall) is May (0.08").

Average rainfall days in December
South Tucson, AZ

Average rainfall days in December - South Tucson, AZ
  • Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is May (1.3 days).

Average snowfall in December
South Tucson, AZ

Average snowfall in December - South Tucson, 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
South Tucson, AZ

Average snowfall days in December - South Tucson, AZ
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
South Tucson, AZ

Average daylight in December / Average sunshine in December - South Tucson, 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
South Tucson, AZ

Average sunshine days in December - South Tucson, AZ
  • Average sunshine days in December: 23.9 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in December
South Tucson, AZ

Average UV index in December - South Tucson, AZ
  • Average UV index in December: 3

The month with the highest UV index is June (UV index 8).
The months with the lowest UV index are November and December (UV index 3).

Average cloud cover in December
South Tucson, AZ

Average cloud cover in December - South Tucson, AZ
  • Average cloud cover in December: 19

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

Average visibility in December
South Tucson, AZ

Average visibility in December - South Tucson, 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).

South Tucson, Arizona, USA

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