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
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a cool 52.3°F (11.3°C) to a frosty 43.7°F (6.5°C). An average low-temperature of 32.4°F (0.2°C) marks the nights throughout December.Humidity
The average relative humidity in December is 77%.Rainfall
In Fairless Junction, during December, the rain falls for 10.9 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Fairless Junction, during the entire year, the rain falls for 154.4 days and collects up to 31.38" (797mm) of precipitation.Snowfall
Months with snowfall in Fairless Junction are January through May, November and December. In Fairless Junction, in December, during 2.8 snowfall days, 1.22" (31mm) of snow is typically accumulated. Throughout the year, there are 15.9 snowfall days, and 8.5" (216mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Fairless Junction, sunrise is at 7:03 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:43 pm EST.
Sunshine
The average sunshine in December is 5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
Is it cold in Fairless Junction during December?
What is the average humidity in December in Fairless Junction?
How many days does it rain in December in Fairless Junction?
How much does it snow in Fairless Junction in December?
What is the month with the shortest days in Fairless Junction?
What is the average length of the day in December in Fairless Junction?
When is the sunrise / sunset in December in Fairless Junction?
How long on average sun shines in December in Fairless Junction?
What are the months with the lowest UV index in Fairless Junction?
What is the UV index reading in December in Fairless Junction?
Average temperature in December
Fairless Junction, PA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Fairless Junction, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Fairless Junction, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Fairless Junction, PA
- Average humidity in December: 77%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Fairless Junction, PA
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Fairless Junction, PA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).
Average snowfall in December
Fairless Junction, PA
- Average snowfall in December: 1.22"
The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Fairless Junction, PA
- Average snowfall days in December: 2.8 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Fairless Junction, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Fairless Junction, PA
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in December
Fairless Junction, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Fairless Junction, PA
- Average cloud cover in December: 46
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Fairless Junction, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Fairless Junction, Pennsylvania, USA
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