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 start of December comes with a reduction in the average high-temperature, receding from a frosty 48.6°F (9.2°C) in November to an icy 39.2°F (4°C). The low-temperature average for Lake Hopatcong during December stands at a subzero cold 27.7°F (-2.4°C).Humidity
February, October and December, with an average relative humidity of 81%, are the most humid months in Lake Hopatcong, New Jersey.Rainfall
In Lake Hopatcong, in December, it is raining for 11 days, with typically 3.54" (90mm) of accumulated precipitation. Throughout the year, in Lake Hopatcong, New Jersey, there are 160.1 rainfall days, and 35.87" (911mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 6.7 days. Throughout December, 3.94" (100mm) of snow is accumulated. In Lake Hopatcong, during the entire year, snow falls for 40.2 days and aggregates up to 23.62" (600mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:04 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:40 pm EST.
Sunshine
In Lake Hopatcong, the average sunshine in December is 4.6h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
How cold is it in Lake Hopatcong in December?
What are the most humid months in Lake Hopatcong?
What is the average humidity in December in Lake Hopatcong?
How many days does it rain in December in Lake Hopatcong?
How much does it snow in Lake Hopatcong in December?
What is the month with the shortest days in Lake Hopatcong?
What is the average length of the day in December in Lake Hopatcong?
What time are sunrise and sunset in December in Lake Hopatcong?
How long on average sun shines in December in Lake Hopatcong?
What is the month with the lowest UV index in Lake Hopatcong?
What is the UV index intensity in December in Lake Hopatcong?
Average temperature in December
Lake Hopatcong, NJ
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Lake Hopatcong, 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
Lake Hopatcong, NJ
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Lake Hopatcong, 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 (76%).
Average rainfall in December
Lake Hopatcong, NJ
- Average rainfall in December: 3.54"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Lake Hopatcong, NJ
- Average rainfall days in December: 11 days
The months with the highest number of rainy days are May and July (17.4 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Lake Hopatcong, NJ
- Average snowfall in December: 3.94"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lake Hopatcong, NJ
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lake Hopatcong, 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 0min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Lake Hopatcong, NJ
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in December
Lake Hopatcong, NJ
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Lake Hopatcong, NJ
- Average cloud cover in December: 52
The months with the most cloud cover are February, March and December (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Lake Hopatcong, NJ
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Lake Hopatcong, New Jersey, USA
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