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
Succasunna in December undergoes a mild reduction in the average high-temperature, shifting from November's chilly 49.3°F (9.6°C) to a wintry 40.1°F (4.5°C). Throughout the nights in December, Succasunna experiences an average low-temperature of 28.6°F (-1.9°C).Humidity
February, October and December, with an average relative humidity of 81%, are the most humid months.Rainfall
In Succasunna, in December, it is raining for 5.5 days, with typically 0.71" (18mm) of accumulated precipitation. In Succasunna, during the entire year, the rain falls for 81.9 days and collects up to 6.69" (170mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Succasunna. In December, in Succasunna, it is snowing for 2.5 days. Throughout December, 0.47" (12mm) of snow is accumulated. Throughout the year, there are 18.1 snowfall days, and 2.68" (68mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:40 pm EST.
Sunshine
In December, the average sunshine in Succasunna is 4.7h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. 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
How cold is December in Succasunna?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much 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 many hours of sunshine does Succasunna have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Succasunna, NJ
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Succasunna, NJ
- 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 (29.93"Hg).
Average wind speed in December
Succasunna, NJ
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Succasunna, NJ
- Average humidity in December: 81%
The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Succasunna, NJ
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is July (0.79").
The driest month (with the least rainfall) is September (0.16").
Average rainfall days in December
Succasunna, NJ
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is July (9.5 days).
The month with the least rainy days is February (4 days).
Average snowfall in December
Succasunna, NJ
- Average snowfall in December: 0.47"
The month with the highest snowfall is March (0.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Succasunna, NJ
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Succasunna, NJ
- 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 month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Succasunna, NJ
- Average sunshine days in December: 24.1 days
The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (18.3 days).
Average UV index in December
Succasunna, NJ
- Average UV index in December: 2
The months with the highest UV index are June and July (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
Succasunna, NJ
- Average cloud cover in December: 50
The months with the most cloud cover are February and March (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Succasunna, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Succasunna, New Jersey, USA
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