Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December, on average, is the coldest month, registering a high temperature of 55.2°F (12.9°C) and a low of 36.5°F (2.5°C).Humidity
December is the most humid month, with an average relative humidity of 52%.Rainfall
In December, the rain falls for 6.7 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. In San Simon, during the entire year, the rain falls for 92.5 days and collects up to 12.36" (314mm) of precipitation.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 1.3 snowfall days, it receives 0.71" (18mm) of snow. In San Simon, during the entire year, snow falls for 2.9 days and aggregates up to 2.4" (61mm) of snow.Daylight
December has the shortest days of the year, with an average of 10h and 6min of daylight.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, sunrise is at 7:17 am and sunset at 5:22 pm MST.
Sunshine
The month with the least sunshine is December, with an average of 6.9h of sunshine.UV index
January, 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 medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
What are December temperatures?
What is the most humid month in San Simon?
What is the average humidity in December?
How many days does it rain in December?
When does it start snowing?
What is the month with the shortest days?
How many hours of daylight does San Simon have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December in San Simon?
What are the months with the lowest UV index?
What is the UV index intensity in December?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
San Simon, Arizona, USA
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