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 brings a decrease in the average high-temperature, shifting from a frosty 47.5°F (8.6°C) in November to an icy 37.9°F (3.3°C). In the month of December, the temperature in Wetherill Junction generally rests at an average low of 27.5°F (-2.5°C).Humidity
The average relative humidity in December is 82%.Rainfall
In Wetherill Junction, during December, the rain falls for 12.8 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, in Wetherill Junction, there are 169.3 rainfall days, and 33.58" (853mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 8.5 days. Throughout December, 4.06" (103mm) of snow is accumulated. In Wetherill Junction, during the entire year, snow falls for 48.3 days and aggregates up to 27.56" (700mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Wetherill Junction.On the first day of the month, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of December, in Wetherill Junction, Pennsylvania, sunrise is at 7:28 am and sunset at 4:47 pm EST.
Sunshine
In December, the average sunshine in Wetherill Junction is 4.4h.UV index
The months with the lowest UV index in Wetherill Junction are January through March, 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 unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
How cold is it in Wetherill Junction in December?
What is the average humidity in December in Wetherill Junction?
How many days does it rain in December in Wetherill Junction?
How much does it snow in Wetherill Junction in December?
What is the month with the shortest days in Wetherill Junction?
How many hours of daylight does Wetherill Junction have in December?
When is the sunrise / sunset in December in Wetherill Junction?
How many hours of sunshine does Wetherill Junction have in December?
What are the months with the lowest UV index in Wetherill Junction?
What is the UV index intensity in December in Wetherill Junction?
Average temperature in December
Wetherill Junction, PA
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Wetherill Junction, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Wetherill Junction, PA
- Average wind speed in December: 7.7mph
The windiest months (with the highest average wind speed) are March and April (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Wetherill Junction, PA
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Wetherill Junction, PA
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in December
Wetherill Junction, PA
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is January (9.9 days).
Average snowfall in December
Wetherill Junction, PA
- Average snowfall in December: 4.06"
The month with the highest snowfall is January (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Wetherill Junction, PA
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Wetherill 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 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in December
Wetherill Junction, PA
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Wetherill Junction, PA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Wetherill Junction, PA
- Average cloud cover in December: 54
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Wetherill Junction, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Wetherill Junction, Pennsylvania, USA
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