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 average high-temperature drops in December, from November's frosty 43.7°F (6.5°C) to a cold 32.7°F (0.4°C). Salem observes an average low-temperature of 23°F (-5°C) during December nights.Humidity
In December, the average relative humidity is 81%.Rainfall
In Salem, in December, it is raining for 11.9 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, in Salem, there are 159.1 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
Months with snowfall in Salem are January through May, October through December. In Salem, during December, snow falls for 11.5 days and regularly aggregates up to 6.18" (157mm) of snow. Throughout the year, there are 64.7 snowfall days, and 36.81" (935mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:06 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:28 pm EST.
Sunshine
The average sunshine in December is 4.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused 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 average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Salem, NY
- Average high temperature in December: 32.7°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Salem, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Salem, NY
- Average wind speed in December: 6.7mph
The windiest months (with the highest average wind speed) are January and April (7.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Salem, NY
- Average humidity in December: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Salem, NY
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is June (2.91").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Salem, NY
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in December
Salem, NY
- Average snowfall in December: 6.18"
The month with the highest snowfall is February (10.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Salem, NY
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Salem, 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in December
Salem, NY
- Average sunshine days in December: 13.4 days
The month with the most sunshine days is September (16.7 days).
The months with the least sunshine days are February and April (10.8 days).
Average UV index in December
Salem, NY
- 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
Salem, NY
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July, August and September (Cloud cover 34).
Average visibility in December
Salem, NY
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Salem, New York, USA
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