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
A shift in Marcy's weather is observed as November turns into December, with the average high temperature reducing from a chilly 42.8°F (6°C) to a cold 32.4°F (0.2°C). Marcy records a mild decrease in temperature during the nights of December, averaging a subzero cold 23.4°F (-4.8°C).Humidity
The average relative humidity in December in Marcy is 86%.Rainfall
In Marcy, in December, during 12.3 rainfall days, 3.46" (88mm) of precipitation is typically accumulated. Throughout the year, there are 175.3 rainfall days, and 38.9" (988mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Marcy. In Marcy, during December, snow falls for 16.8 days and regularly aggregates up to 10.16" (258mm) of snow. In Marcy, during the entire year, snow falls for 90 days and aggregates up to 47.6" (1209mm) of snow.Daylight
The month with the shortest days in Marcy is December, with an average of 9h and 6min of daylight.On the first day of December in Marcy, sunrise is at 7:13 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:36 pm EST.
Sunshine
In Marcy, the average sunshine in December is 2.9h.UV index
The months with the lowest UV index in Marcy are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 1 in December translates into these instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Marcy in December?
What is the average humidity in December in Marcy?
How much does it rain in Marcy in December?
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 are sunrise and 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, NY
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Marcy, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Marcy, NY
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Marcy, NY
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in December
Marcy, NY
- Average rainfall in December: 3.46"
The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is September (2.6").
Average rainfall days in December
Marcy, NY
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in December
Marcy, NY
- Average snowfall in December: 10.16"
The month with the highest snowfall is January (11.22").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marcy, NY
- Average snowfall days in December: 16.8 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Marcy, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in December
Marcy, NY
- Average sunshine days in December: 7.3 days
The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is February (4.4 days).
Average UV index in December
Marcy, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Marcy, NY
- Average cloud cover in December: 70
The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Marcy, NY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Marcy, New York, USA
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