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 brings a small change in high-temperatures, falling from a frosty 45.7°F (7.6°C) in November to an icy 35.8°F (2.1°C). During the nights in December, Marcy experiences a consistent average temperature of 25.7°F (-3.5°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 84%.Rainfall
In Marcy, in December, during 9.6 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, there are 153.7 rainfall days, and 28.35" (720mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 9.6 days. Throughout December, 4.13" (105mm) of snow is accumulated. In Marcy, during the entire year, snow falls for 47.2 days and aggregates up to 22.68" (576mm) of snow.Daylight
December has the shortest days of the year in Marcy, with an average of 9h and 12min of daylight.On the first day of December in Marcy, sunrise is at 7:11 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:43 pm EST.
Sunshine
In December, the average sunshine is 3.5h.UV index
The month with the lowest UV index in Marcy is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is it in Marcy in December?
What are the most humid months in Marcy?
What is the average humidity in December in Marcy?
How many days does it rain in December in Marcy?
How many days does it snow in December in Marcy?
What is the month with the shortest days in Marcy?
What is the average length of the day in December in Marcy?
When is the sunrise / sunset in December in Marcy?
How many hours of sunshine does Marcy have in December?
What is the month with the lowest UV index in Marcy?
What is the UV index intensity in December in Marcy?
Average temperature in December
Marcy, PA
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Marcy, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Marcy, PA
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are January, February, March and April (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Marcy, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in December
Marcy, PA
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in December
Marcy, PA
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Marcy, PA
- Average snowfall in December: 4.13"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marcy, PA
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Marcy, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Marcy, PA
- Average sunshine days in December: 15 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in December
Marcy, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Marcy, PA
- Average cloud cover in December: 65
The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Marcy, 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).
Marcy, Pennsylvania, USA
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