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 start of December involves a temperature drop, moving from a cool 50°F (10°C) in November to an icy 40.1°F (4.5°C). Throughout December, the temperature tends to fall to a consistent average low of 29.1°F (-1.6°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 79%.Rainfall
December is the month with the most rainfall. Rain falls for 10.8 days and accumulates 2.68" (68mm) of precipitation.Snowfall
Months with snowfall in Hillburn are January through May, October through December. In December, it is snowing for 5.1 days. Throughout December, 1.81" (46mm) of snow is accumulated. Throughout the year, there are 28.5 snowfall days, and 10.98" (279mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:03 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:38 pm EST.
Sunshine
The average sunshine in December is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What are the most humid months in Hillburn?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Hillburn have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Hillburn have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Hillburn, NY
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Hillburn, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Hillburn, NY
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Hillburn, NY
- Average humidity in December: 79%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Hillburn, NY
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is December (2.68").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Hillburn, NY
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Hillburn, NY
- Average snowfall in December: 1.81"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hillburn, NY
- Average snowfall days in December: 5.1 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hillburn, NY
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Hillburn, NY
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Hillburn, NY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (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
Hillburn, NY
- Average cloud cover in December: 48
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Hillburn, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
Hillburn, New York, USA
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