January weather forecastJersey City, NJ
January
Weather in January
January kicks off with a distinctive winter chill in Jersey City. Notably, temperatures can fall as low as 25.9°F (-3.4°C) while in the daytime averages rise to a mere 36.5°F (2.5°C). Flurries are frequent, with snow often beautifying the cityscape. Sunlight is elusive, with shortened days and often overcast sky, setting a serene tone for the frigid start of the year.Temperature
January tends to be the coldest month, with temperatures averaging a daily high of 36.5°F (2.5°C) and a low of 25.9°F (-3.4°C).Humidity
In Jersey City, the average relative humidity in January is 74%.Rainfall
In Jersey City, in January, it is raining for 9 days, with typically 2.32" (59mm) of accumulated precipitation. In Jersey City, during the entire year, the rain falls for 163.4 days and collects up to 34.84" (885mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Jersey City, in January, during 6.5 snowfall days, 2.09" (53mm) of snow is typically accumulated. Throughout the year, there are 22.9 snowfall days, and 10.63" (270mm) of snow is accumulated.Ocean temperature
In Jersey City, the average seawater temperature in January is 41.7°F (5.4°C).Note: Entering waters of 41.7°F (5.4°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
In Jersey City, the average length of the day in January is 9h and 39min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:39 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:12 pm EST.
Sunshine
In Jersey City, the average sunshine in January is 5.2h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Jersey City. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 during January translates into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. 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
Average temperature in January
Jersey City, NJ
- Average high temperature in January: 36.5°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 (36.5°F).
- Average low temperature in January: 25.9°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in January
Jersey City, NJ
- Average pressure in January: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Jersey City, NJ
- Average wind speed in January: 9.8mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in January
Jersey City, NJ
- Average humidity in January: 74%
The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (71%).
Average rainfall in January
Jersey City, NJ
- Average rainfall in January: 2.32"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in January
Jersey City, NJ
- Average rainfall days in January: 9 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (9 days).
Average snowfall in January
Jersey City, NJ
- Average snowfall in January: 2.09"
The month with the highest snowfall is March (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Jersey City, NJ
- Average snowfall days in January: 6.5 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
Jersey City, NJ
- Average sea temperature in January: 41.7°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).
Average daylight in January /
Average sunshine in January
Jersey City, NJ
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in January
Jersey City, NJ
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is January (17.8 days).
The months with the least sunshine days are June and July (11.3 days).
Average UV index in January
Jersey City, NJ
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Jersey City, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in January
Jersey City, NJ
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
