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, with an average high of 57.9°F (14.4°C) and a low of 41.4°F (5.2°C), signifies the coldest month of the year.Humidity
With an average relative humidity of 49%, December is the most humid month.Rainfall
In Superior, during December, the rain falls for 7.5 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Superior, during the entire year, the rain falls for 85.7 days and collects up to 14.29" (363mm) of precipitation.Snowfall
January through March, September and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.12" (3mm) of snow. In Superior, during the entire year, snow falls for 1.7 days and aggregates up to 1.61" (41mm) of snow.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:10 am and sunset at 5:16 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:27 pm MST.
Sunshine
With an average of 6.6h of sunshine, December has the least sunshine of the year.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 medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 3 in December translates into these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Superior?
What are December temperatures?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
When does it start snowing?
What is the month with the shortest days?
How many hours of daylight does Superior 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?
What is the month with the lowest UV index in Superior?
What is the UV index reading in December?
Average temperature in December
Superior, AZ
- Average high temperature in December: 57.9°F
The warmest months (with the highest average high temperature) are June and July (95.5°F).
The month with the lowest average high temperature is December (57.9°F).
- Average low temperature in December: 41.4°F
The months with the highest average low temperature are July and August (76.5°F).
The coldest months (with the lowest average low temperature) are January and December (41.4°F).
Average pressure in December
Superior, 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 (29.85"Hg).
Average wind speed in December
Superior, AZ
- Average wind speed in December: 5.6mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Superior, AZ
- Average humidity in December: 49%
The month with the highest relative humidity is December (49%).
The month with the lowest relative humidity is June (20%).
Average rainfall in December
Superior, AZ
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is August (2.28").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in December
Superior, AZ
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is June (3.3 days).
Average snowfall in December
Superior, AZ
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, October and November (0").
Average snowfall days in December
Superior, AZ
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, October and November (0 days).
Average daylight in December /
Average sunshine in December
Superior, AZ
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 4min
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 36min).
Average sunshine days in December
Superior, AZ
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is May (27 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Superior, 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
Superior, AZ
- Average cloud cover in December: 24
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).
Average visibility in December
Superior, 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).
Superior, Arizona, USA
Weather forecast for your location
2. Allow the app to use your location