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 coldest period is January, when temperatures fluctuate between an average high of 33.4°F (0.8°C) and a low of 20.7°F (-6.3°C).Humidity
In January, the average relative humidity in Hopatcong Heights, New Jersey, is 78%.Rainfall
In Hopatcong Heights, during January, the rain falls for 7.5 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Hopatcong Heights, during the entire year, the rain falls for 162.3 days and collects up to 31.54" (801mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In January, in Hopatcong Heights, it is snowing for 9.8 days. Throughout January, 4.41" (112mm) of snow is accumulated. In Hopatcong Heights, during the entire year, snow falls for 36.2 days and aggregates up to 19.61" (498mm) of snow.Daylight
In Hopatcong Heights, New Jersey, the average length of the day in January is 9h and 38min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:14 pm EST.
Sunshine
In January, the average sunshine is 4.8h.UV index
In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Hopatcong Heights?
How cold is January in Hopatcong Heights?
What is the average humidity in January in Hopatcong Heights?
How much does it rain in Hopatcong Heights in January?
How many days does it snow in January in Hopatcong Heights?
How many hours of daylight does Hopatcong Heights have in January?
What time are sunrise and sunset in January in Hopatcong Heights?
How long on average sun shines in January in Hopatcong Heights?
What is the UV index reading in January in Hopatcong Heights?
Average temperature in January
Hopatcong Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, New Jersey, USA
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