December weather forecastBrewster, NY
December
Weather in December
The first month of the winter, December, is also an icy month in Brewster, New York, with an average temperature ranging between max 39°F (3.9°C) and min 28.6°F (-1.9°C).Temperature
A moderate decline in the average high-temperature is seen during December, decreasing from a chilly 48.6°F (9.2°C) in November to an icy 39°F (3.9°C). During December, the temperature in Brewster, New York, is averaged to a low of 28.6°F (-1.9°C) at night.Humidity
The months with the highest humidity are February, October and December, with an average relative humidity of 79%.Rainfall
The month with the most rainfall in Brewster is December, when the rain falls for 10.5 days and typically aggregates up to 2.99" (76mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Brewster, New York, in December, snow falls for 5.3 days, with typically accumulated 2.83" (72mm) of snow. Throughout the year, in Brewster, there are 31 snowfall days, and 16.22" (412mm) of snow is accumulated.Daylight
The month with the shortest days in Brewster is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:25 pm. On the last day of December, in Brewster, sunrise is at 7:20 am and sunset at 4:35 pm EST.
Sunshine
In Brewster, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Brewster, NY
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Brewster, 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
Brewster, NY
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Brewster, NY
- Average humidity in December: 79%
The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Brewster, NY
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is December (2.99").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in December
Brewster, NY
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Brewster, NY
- Average snowfall in December: 2.83"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brewster, NY
- Average snowfall days in December: 5.3 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brewster, NY
- Average daylight in December: 9h and 12min
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: 4h and 42min
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 36min).
Average sunshine days in December
Brewster, NY
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is January (18.5 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in December
Brewster, NY
- Average UV index in December: 2
The months with the highest UV index are June 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
Brewster, NY
- Average cloud cover in December: 49
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Brewster, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February, May and June (5mi).
