Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The month of January, characterized by an average high of 33.4°F (0.8°C) and a low of 20.7°F (-6.3°C), is recognized as the coldest.Humidity
The average relative humidity in January is 78%.Rainfall
In Hopatcong, in January, it is raining for 7.5 days, with typically 2.05" (52mm) of accumulated precipitation. In Hopatcong, during the entire year, the rain falls for 162.3 days and collects up to 31.54" (801mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In January, it is snowing for 9.8 days. Throughout January, 4.41" (112mm) of snow is accumulated. Throughout the year, there are 36.2 snowfall days, and 19.61" (498mm) of snow is accumulated.Daylight
In Hopatcong, the average length of the day in January is 9h and 38min.On the first day of January, sunrise is at 7:23 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:13 pm EST.
Sunshine
In January, the average sunshine is 4.8h.UV index
In Hopatcong, New Jersey, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 2 during January leads to these instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Hopatcong?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in Hopatcong in January?
How many hours of daylight does Hopatcong have in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What is the UV index intensity in January?
Average temperature in January
Hopatcong, NJ
- Average high temperature in January: 33.4°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 (33.4°F).
- Average low temperature in January: 20.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in January
Hopatcong, NJ
- Average pressure in January: 30.07"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 January
Hopatcong, NJ
- Average wind speed in January: 7.9mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in January
Hopatcong, NJ
- Average humidity in January: 78%
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 January
Hopatcong, NJ
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is July (3.35").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in January
Hopatcong, NJ
- Average rainfall days in January: 7.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in January
Hopatcong, NJ
- Average snowfall in January: 4.41"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Hopatcong, NJ
- Average snowfall days in January: 9.8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Hopatcong, NJ
- Average daylight in January: 9h and 4min
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 January: 4h and 5min
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 January
Hopatcong, NJ
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in January
Hopatcong, NJ
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Hopatcong, NJ
- Average cloud cover in January: 48
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
Hopatcong, NJ
- Average visibility in January: 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).
Hopatcong, New Jersey, USA
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