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
The onset of December entails a temperature shift, as the average high-temperature decreases from a frosty 43.7°F (6.5°C) in November to an icy 33.6°F (0.9°C). Preston Park reports a consistent average low-temperature of 23.4°F (-4.8°C) throughout December nights.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 87%.Rainfall
In Preston Park, in December, it is raining for 6.9 days, with typically 0.63" (16mm) of accumulated precipitation. Throughout the year, there are 104.8 rainfall days, and 9.13" (232mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Preston Park, during December, snow falls for 9.6 days and regularly aggregates up to 1.3" (33mm) of snow. In Preston Park, during the entire year, snow falls for 48.7 days and aggregates up to 7.44" (189mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:40 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 2.7h of sunshine.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 1 in December leads to these recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December in Preston Park?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Preston Park have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Preston Park, PA
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in December
Preston Park, PA
- Average pressure in December: 30.08"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
Preston Park, PA
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are January and February (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Preston Park, PA
- Average humidity in December: 87%
The months with the highest relative humidity are February and December (87%).
The months with the lowest relative humidity are June and July (79%).
Average rainfall in December
Preston Park, PA
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is August (1.02").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in December
Preston Park, PA
- Average rainfall days in December: 6.9 days
The months with the highest number of rainy days are May and July (12.3 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in December
Preston Park, PA
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Preston Park, PA
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Preston Park, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are February and December (Average sunshine: 2h and 42min).
Average sunshine days in December
Preston Park, PA
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is April (14.8 days).
Average UV index in December
Preston Park, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Preston Park, PA
- Average cloud cover in December: 73
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in December
Preston Park, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are August and September (4mi).
Preston Park, Pennsylvania, USA
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