December weather forecast
Rio Rico, AZ

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Weather in December

The first month of the winter, December, is still a mild month in Rio Rico, Arizona, with an average temperature ranging between max 59.2°F (15.1°C) and min 39.9°F (4.4°C).

Temperature

December, noted for its average high-temperature of 59.2°F (15.1°C) and an average low-temperature of 39.9°F (4.4°C), is considered the coldest month.

Humidity

In Rio Rico, the average relative humidity in December is 48%.

Rainfall

In Rio Rico, Arizona, in December, during 5.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Rio Rico, during the entire year, the rain falls for 87.8 days and collects up to 15.43" (392mm) of precipitation.

Snowfall

January through March and December are months with snowfall. The month with the most snowfall is December, when snow falls for 0.7 days and typically aggregates up to 1.06" (27mm) of snow.

Daylight

The month with the shortest days in Rio Rico is December, with an average of 10h and 6min of daylight.
On the first day of the month, sunrise is at 7:05 am and sunset at 5:20 pm. On the last day of December, in Rio Rico, sunrise is at 7:23 am and sunset at 5:31 pm MST.

Sunshine

With an average of 6.9h of sunshine, December has the least sunshine of the year in Rio Rico.

UV index

The months with the lowest UV index are January, 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 radiation for average individuals.
Note: The maximum UV index, 3 during December, leads to the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the coldest time of year in Rio Rico?

December tends to be the coldest month in Rio Rico, with temperatures averaging a daily high of 59.2°F (15.1°C) and a low of 39.9°F (4.4°C).

What are December temperatures in Rio Rico?

The high-temperature, in December, in Rio Rico, is 59.2°F (15.1°C), while the low-temperature averages to 39.9°F (4.4°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 84.2°F (29°C).

What is the average humidity in December in Rio Rico?

In December, the average relative humidity in Rio Rico is 48%.

How much does it rain in Rio Rico in December?

In Rio Rico, during December, the rain falls for 5.7 days and regularly aggregates up to 0.71" (18mm) of precipitation.

When does it snow the most in Rio Rico?

The month with the most snowfall in Rio Rico, Arizona, is December, when snow falls for 0.7 days and typically aggregates up to 1.06" (27mm) of snow.

When does it start snowing in Rio Rico?

December is the first month it typically snows in Rio Rico, Arizona. Throughout December, in the average 0.7 snowfall days, it receives 1.06" (27mm) of snow.

What is the month with the shortest days in Rio Rico?

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

How many hours of daylight does Rio Rico have in December?

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

When are sunrise and sunset in December in Rio Rico?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:31 pm MST.

What is the month with the least sunshine in Rio Rico?

With an average of 6.9h of sunshine, December has the least sunshine of the year in Rio Rico, Arizona.

How long on average sun shines in December in Rio Rico?

In Rio Rico, the average sunshine duration in December is 6.9h.

When is the lowest UV index in Rio Rico?

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

How high is the UV index in December in Rio Rico?

The average daily maximum UV index in December in Rio Rico is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Rio Rico, AZ

Average temperature in December - Rio Rico, AZ
  • Average high temperature in December: 59.2°F

The warmest month (with the highest average high temperature) is June (91°F).
The month with the lowest average high temperature is December (59.2°F).

  • Average low temperature in December: 39.9°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).

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Average pressure in December
Rio Rico, AZ

Average pressure in December - Rio Rico, AZ
  • Average pressure in December: 30.03"Hg

The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

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Average wind speed in December
Rio Rico, AZ

Average wind speed in December - Rio Rico, AZ
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is May (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in December
Rio Rico, AZ

Average humidity in December - Rio Rico, AZ
  • Average humidity in December: 48%

The month with the highest relative humidity is August (51%).
The months with the lowest relative humidity are May and June (24%).

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Average rainfall in December
Rio Rico, AZ

Average rainfall in December - Rio Rico, AZ
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is May (0.16").

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Average rainfall days in December
Rio Rico, AZ

Average rainfall days in December - Rio Rico, AZ
  • Average rainfall days in December: 5.7 days

The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is May (1.8 days).

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Average snowfall in December
Rio Rico, AZ

Average snowfall in December - Rio Rico, AZ
  • Average snowfall in December: 1.06"

The month with the highest snowfall is December (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Rio Rico, AZ

Average snowfall days in December - Rio Rico, AZ
  • Average snowfall days in December: 0.7 days

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in December /
Average sunshine in December
Rio Rico, AZ

Average daylight in December / Average sunshine in December - Rio Rico, 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: 6h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

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Average sunshine days in December
Rio Rico, AZ

Average sunshine days in December - Rio Rico, AZ
  • Average sunshine days in December: 24.4 days

The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is July (6.6 days).

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Average UV index in December
Rio Rico, AZ

Average UV index in December - Rio Rico, AZ
  • Average UV index in December: 3

The months with the highest UV index are June and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).

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Average cloud cover in December
Rio Rico, AZ

Average cloud cover in December - Rio Rico, AZ
  • Average cloud cover in December: 21

The month with the most cloud cover is July (Cloud cover 24).
The month with the least cloud cover is May (Cloud cover 7).

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Average visibility in December
Rio Rico, AZ

Average visibility in December - Rio Rico, 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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Rio Rico, Arizona, USA

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