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
With December's arrival, South Salem sees a decrease in average high-temperatures, moving from a chilly 48.7°F (9.3°C) in November to an icy 39.6°F (4.2°C). During December, South Salem's temperature falls to a steady low-temperature average of 29.3°F (-1.5°C).Humidity
In South Salem, the average relative humidity in December is 78%.Rainfall
In South Salem, in December, during 8.1 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, in South Salem, there are 123.7 rainfall days, and 11.65" (296mm) of precipitation is accumulated.Snowfall
Months with snowfall in South Salem are January through April, October through December. In South Salem, in December, snow falls for 4.1 days, with typically accumulated 0.55" (14mm) of snow. In South Salem, during the entire year, snow falls for 20.5 days and aggregates up to 2.68" (68mm) of snow.Daylight
December has the shortest days of the year in South Salem, New York, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:35 pm EST.
Sunshine
In December, the average sunshine is 4.7h.UV index
The month with the lowest UV index in South Salem is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
Is it cold in South Salem during December?
What is the average humidity in December in South Salem?
How many days does it rain in December in South Salem?
How many days does it snow in December in South Salem?
What is the month with the shortest days in South Salem?
How many hours of daylight does South Salem have in December?
When is the sunrise / sunset in December in South Salem?
How many hours of sunshine does South Salem have in December?
When is the lowest UV index in South Salem?
What is the UV index intensity in December in South Salem?
Average temperature in December
South Salem, NY
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in December
South Salem, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
South Salem, NY
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
South Salem, NY
- Average humidity in December: 78%
The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
South Salem, NY
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days in December
South Salem, NY
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in December
South Salem, NY
- Average snowfall in December: 0.55"
The months with the highest snowfall are January and February (0.75").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
South Salem, NY
- Average snowfall days in December: 4.1 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Salem, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
South Salem, NY
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is June (13.3 days).
Average UV index in December
South Salem, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
South Salem, NY
- Average cloud cover in December: 50
The months with the most cloud cover are February, March and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
South Salem, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, July, August, September, October, November and December (6mi).
The months with the lowest visibility are May and June (5mi).
South Salem, New York, USA
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