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
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a wintry 41.7°F (5.4°C) to a still icy 32°F (0°C). An average nighttime temperature of 21°F (-6.1°C) is noted during the month of December.Humidity
February and December, with an average relative humidity of 88%, are the most humid months.Rainfall
In Sundown, in December, it is raining for 8.5 days, with typically 3.07" (78mm) of accumulated precipitation. In Sundown, during the entire year, the rain falls for 157.3 days and collects up to 37.91" (963mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 16.4 days and accumulates 10.91" (277mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:06 am and sunset at 4:27 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:36 pm EST.
Sunshine
In December, the average sunshine is 2.9h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Sundown have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Sundown have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Sundown, NY
- Average high temperature in December: 32°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in December: 21°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in December
Sundown, 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
Sundown, NY
- Average wind speed in December: 7.5mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Sundown, NY
- Average humidity in December: 88%
The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (80%).
Average rainfall in December
Sundown, NY
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is February (2.32").
Average rainfall days in December
Sundown, NY
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (19.3 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall in December
Sundown, NY
- Average snowfall in December: 10.91"
The month with the highest snowfall is December (10.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sundown, NY
- Average snowfall days in December: 16.4 days
The month with the highest number of snowfall days is February (17 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sundown, NY
- 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: 2h and 5min
The month with the most sunshine is July (Average sunshine: 8h and 54min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in December
Sundown, NY
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in December
Sundown, 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, March, November and December (UV index 1).
Average cloud cover in December
Sundown, NY
- Average cloud cover in December: 73
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 48).
Average visibility in December
Sundown, NY
- Average visibility in December: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Sundown, New York, USA
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