December weather forecast
South Tucson, AZ

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Weather in December

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

Temperature

With an average high-temperature of 60.8°F (16°C) and an average low-temperature of 43°F (6.1°C), December is the coldest month.

Humidity

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

Rainfall

In South Tucson, it is raining for 6.2 days, with typically 0.83" (21mm) of accumulated precipitation. In South Tucson, during the entire year, the rain falls for 66.1 days and collects up to 7.95" (202mm) of precipitation.

Snowfall

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

Daylight

December has the shortest days of the year in South Tucson, with an average of 10h and 5min of daylight.
On the first day of the month, sunrise is at 7:06 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

The month with the least sunshine in South Tucson 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 value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in South Tucson?

With an average high-temperature of 60.8°F (16°C) and an average low-temperature of 43°F (6.1°C), December is the coldest month in South Tucson.

What is the temperature in December in South Tucson?

In December, in South Tucson, Arizona, the average high-temperature is 60.8°F (16°C), and the average low-temperature is 43°F (6.1°C). in September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, 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 in South Tucson is 45%.

How much does it rain in South Tucson in December?

In South Tucson, Arizona, during December, the rain falls for 6.2 days and regularly aggregates up to 0.83" (21mm) of precipitation.

When it does not snow in South Tucson?

February through December are months without snowfall.

Does it snow in South Tucson in December?

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

What is the month with the shortest days in South Tucson?

December has the shortest days of the year in South Tucson, Arizona, with an average of 10h and 5min of daylight.

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

The average day length in December is 10h and 5min.

When are sunrise and sunset in December in South Tucson?

On the first day of December in South Tucson, sunrise is at 7:06 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 in South Tucson?

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

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

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

What are the months with the lowest UV index in South Tucson?

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

How high is the UV index in December in South Tucson?

In South Tucson, Arizona, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
70.9°F 21.6°C
60.8°F 16°C
61.7°F 16.5°C
Average low temperature
50.5°F 10.3°C
43°F 6.1°C
43°F 6.1°C
Average pressure
30.01" 762mmHg
30.05" 763mmHg
30.08" 764mmHg
Average wind speed
6.8mph 10.9km/h
6.3mph 10.1km/h
6.2mph 10km/h
Average max. wind speed
7.4mph 11.9km/h
7mph 11.3km/h
6.6mph 10.6km/h
Average wind speed gusts
11.2mph 18km/h
10.4mph 16.7km/h
10.1mph 16.3km/h
Average humidity
37%
45%
42%
Average rainfall
0.75" 19mm
0.83" 21mm
0.79" 20mm
Average rainfall days
3.5
6.2
4.9
Average snowfall
0" 0mm
0" 0mm
0.08" 2mm
Average snowfall days
0
0
0.2
Average daylight
10h 3min
10h 1min
10h 2min
Average sunshine
7h 2min
7h 0min
7h 1min
Average sunshine days
25.5
23.9
26.1
Average UV index
3
3
4
Average cloud cover
13%
19%
17%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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