December weather forecast
San Simon, AZ

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Weather in December

The first month of the winter, December, is also a fresh month in San Simon, Arizona, with an average temperature ranging between min 36.5°F (2.5°C) and max 55.2°F (12.9°C).

Temperature

December brings the lowest temperatures, with an average high of 55.2°F (12.9°C) and an average low of 36.5°F (2.5°C).

Humidity

With an average relative humidity of 52%, December is the most humid month.

Rainfall

In San Simon, in December, it is raining for 6.7 days, with typically 0.67" (17mm) of accumulated precipitation. In San Simon, Arizona, during the entire year, the rain falls for 92.5 days and collects up to 12.36" (314mm) of precipitation.

Snowfall

Months with snowfall are January through March and December. December is the first month it typically snows in San Simon. Throughout December, in the average 1.3 snowfall days, it receives 0.71" (18mm) of snow. Throughout the year, in San Simon, there are 2.9 snowfall days, and 2.4" (61mm) of snow is accumulated.

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year in San Simon.
On the first day of the month, sunrise is at 7:00 am and sunset at 5:11 pm. On the last day of December, in San Simon, sunrise is at 7:17 am and sunset at 5:22 pm MST.

Sunshine

With an average of 6.9h of sunshine, December has the least sunshine of the year in San Simon.

UV index

January, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 3 in December suggests the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. 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. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What is the coldest month in San Simon?

In San Simon, December is the month with the lowest recorded average temperatures, measuring a high of 55.2°F (12.9°C) and a low of 36.5°F (2.5°C).

What are December temperatures in San Simon?

The high-temperature, in December, in San Simon, is 55.2°F (12.9°C), while the low-temperature averages to 36.5°F (2.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 84.2°F (29°C).

What is the most humid month in San Simon?

With an average relative humidity of 52%, December is the most humid month in San Simon, Arizona.

What is the average humidity in December in San Simon?

In December, the average relative humidity in San Simon is 52%.

How many days does it rain in December in San Simon?

In San Simon, in December, it is raining for 6.7 days, with typically 0.67" (17mm) of accumulated precipitation.

When does it start snowing in San Simon?

December is the first month it typically snows in San Simon. Throughout December, in the average 1.3 snowfall days, it receives 0.71" (18mm) of snow.

What is the month with the shortest days in San Simon?

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

What is the average length of the day in December in San Simon?

In San Simon, Arizona, the average day length in December is 10h and 5min.

When are sunrise and sunset in December in San Simon?

On the first day of December, sunrise is at 7:00 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:22 pm MST.

What is the month with the least sunshine in San Simon?

With an average of 6.9h of sunshine, December has the least sunshine of the year in San Simon.

How long on average sun shines in December in San Simon?

The average sunshine duration in December is 6.9h.

What is the month with the lowest UV index in San Simon?

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

How high is the UV index in December in San Simon?

In December, the average daily maximum UV index in San Simon is 3. A UV Index reading of 3 to 5 represents a medium health risk from 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
San Simon, AZ

Average temperature in December - San Simon, AZ
  • Average high temperature in December: 55.2°F

The warmest month (with the highest average high temperature) is June (92.1°F).
The month with the lowest average high temperature is December (55.2°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).

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Average pressure in December
San Simon, AZ

Average pressure in December - San Simon, AZ
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in December
San Simon, AZ

Average wind speed in December - San Simon, AZ
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in December
San Simon, AZ

Average humidity in December - San Simon, AZ
  • Average humidity in December: 52%

The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is June (21%).

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Average rainfall in December
San Simon, AZ

Average rainfall in December - San Simon, AZ
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is May (0.08").

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Average rainfall days in December
San Simon, AZ

Average rainfall days in December - San Simon, AZ
  • Average rainfall days in December: 6.7 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is May (2.6 days).

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Average snowfall in December
San Simon, AZ

Average snowfall in December - San Simon, AZ
  • Average snowfall in December: 0.71"

The month with the highest snowfall is February (0.87").
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
San Simon, AZ

Average snowfall days in December - San Simon, AZ
  • Average snowfall days in December: 1.3 days

The month with the highest number of snowfall days is December (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
San Simon, AZ

Average daylight in December / Average sunshine in December - San Simon, 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 August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

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Average sunshine days in December
San Simon, AZ

Average sunshine days in December - San Simon, AZ
  • Average sunshine days in December: 23.2 days

The month with the most sunshine days is May (27.4 days).
The month with the least sunshine days is July (6.6 days).

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Average UV index in December
San Simon, AZ

Average UV index in December - San Simon, AZ
  • Average UV index in December: 3

The months with the highest UV index are June, July 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
San Simon, AZ

Average cloud cover in December - San Simon, AZ
  • Average cloud cover in December: 20

The months with the most cloud cover are July and December (Cloud cover 20).
The month with the least cloud cover is May (Cloud cover 8).

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Average visibility in December
San Simon, AZ

Average visibility in December - San Simon, 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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San Simon, Arizona, USA

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