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
December's arrival comes with a decrease in the average high-temperature, moving from a chilly 44.2°F (6.8°C) in November to a wintry 34.3°F (1.3°C). During December, an average low-temperature of 24.6°F (-4.1°C) is observed.Humidity
In Brooklyn, the average relative humidity in December is 85%.Rainfall
In Brooklyn, in December, it is raining for 10.9 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, in Brooklyn, there are 163.7 rainfall days, and 32.05" (814mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Brooklyn, Pennsylvania, in December, snow falls for 15.5 days, with typically accumulated 7.52" (191mm) of snow. Throughout the year, in Brooklyn, there are 80.1 snowfall days, and 41.93" (1065mm) of snow is accumulated.Daylight
The month with the shortest days in Brooklyn is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:42 pm EST.
Sunshine
In December, the average sunshine is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Brooklyn. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in Brooklyn?
What is the average humidity in December in Brooklyn?
How many days does it rain in December in Brooklyn?
How much does it snow in Brooklyn in December?
What is the month with the shortest days in Brooklyn?
What is the average length of the day in December in Brooklyn?
When are sunrise and sunset in December in Brooklyn?
How long on average sun shines in December in Brooklyn?
When is the lowest UV index in Brooklyn?
How high is the UV index in December in Brooklyn?
Average temperature in December
Brooklyn, PA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 24.6°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 (17.1°F).
Average pressure in December
Brooklyn, 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 (29.94"Hg).
Average wind speed in December
Brooklyn, PA
- Average wind speed in December: 8.1mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Brooklyn, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).
Average rainfall in December
Brooklyn, PA
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in December
Brooklyn, PA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in December
Brooklyn, PA
- Average snowfall in December: 7.52"
The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brooklyn, PA
- Average snowfall days in December: 15.5 days
The months with the highest number of snowfall days are January and February (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brooklyn, 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: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in December
Brooklyn, PA
- Average sunshine days in December: 9.4 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Brooklyn, 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 and December (UV index 1).
Average cloud cover in December
Brooklyn, PA
- Average cloud cover in December: 68
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Brooklyn, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Brooklyn, Pennsylvania, USA
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