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
In Swift Trail Junction, December is the coldest month, with temperatures averaging a high of 54.7°F (12.6°C) and a low of 37°F (2.8°C).Humidity
With an average relative humidity of 51%, December is the most humid month.Rainfall
In Swift Trail Junction, Arizona, during December, the rain falls for 7.3 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Swift Trail Junction, Arizona, during the entire year, the rain falls for 79.6 days and collects up to 8.58" (218mm) of precipitation.Snowfall
January, February, September and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, in Swift Trail Junction, there are 1.3 snowfall days, and 0.75" (19mm) of snow is accumulated.Daylight
The month with the shortest days in Swift Trail Junction is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:23 pm MST.
Sunshine
The month with the least sunshine is December, with an average of 7h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Swift Trail Junction?
What is the usual temperature for Swift Trail Junction in December?
What is the most humid month in Swift Trail Junction?
What is the average humidity in December in Swift Trail Junction?
How much does it rain in Swift Trail Junction in December?
When does it start snowing in Swift Trail Junction?
What is the month with the shortest days in Swift Trail Junction?
What is the average length of the day in December in Swift Trail Junction?
When is the sunrise / sunset in December in Swift Trail Junction?
What is the month with the least sunshine in Swift Trail Junction?
How many hours of sunshine does Swift Trail Junction have in December?
When is the lowest UV index in Swift Trail Junction?
How high is the UV index in December in Swift Trail Junction?
Average temperature in December
Swift Trail Junction, AZ
- Average high temperature in December: 54.7°F
The warmest month (with the highest average high temperature) is June (93.2°F).
The month with the lowest average high temperature is December (54.7°F).
- Average low temperature in December: 37°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.3°F).
Average pressure in December
Swift Trail Junction, AZ
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Swift Trail Junction, AZ
- Average wind speed in December: 5.2mph
The windiest months (with the highest average wind speed) are April and May (7.5mph).
The calmest months (with the lowest average wind speed) are January and December (5.2mph).
Average humidity in December
Swift Trail Junction, AZ
- Average humidity in December: 51%
The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is June (20%).
Average rainfall in December
Swift Trail Junction, AZ
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is July (1.3").
The driest months (with the least rainfall) are April and May (0.16").
Average rainfall days in December
Swift Trail Junction, AZ
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is May (3.2 days).
Average snowfall in December
Swift Trail Junction, AZ
- Average snowfall in December: 0.12"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are March, April, May, June, July, August, October and November (0").
Average snowfall days in December
Swift Trail Junction, AZ
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, October and November (0 days).
Average daylight in December /
Average sunshine in December
Swift Trail Junction, 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: 7h and 0min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in December
Swift Trail Junction, AZ
- Average sunshine days in December: 23 days
The month with the most sunshine days is May (26.7 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in December
Swift Trail Junction, AZ
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Swift Trail Junction, AZ
- Average cloud cover in December: 20
The month with the most cloud cover is December (Cloud cover 20).
The months with the least cloud cover are May and June (Cloud cover 8).
Average visibility in December
Swift Trail Junction, 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).
Swift Trail Junction, Arizona, USA
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