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
January is the coldest month, with the temperature often reaching an average high of 35.2°F (1.8°C) and an average low of 23.7°F (-4.6°C).Humidity
In Roseland, New Jersey, the average relative humidity in January is 75%.Rainfall
The month with the least rainfall is January, when the rain falls for 6.1 days and typically collects 0.67" (17mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Roseland, New Jersey. In Roseland, during January, snow falls for 4.5 days and regularly aggregates up to 0.63" (16mm) of snow. Throughout the year, in Roseland, there are 19 snowfall days, and 3.7" (94mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 38min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:39 pm. On the last day of January, in Roseland, sunrise is at 7:08 am and sunset at 5:12 pm EST.
Sunshine
In Roseland, New Jersey, the average sunshine in January is 5.1h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 in January translates into this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Roseland?
How cold is January in Roseland?
What is the average humidity in January in Roseland?
What is the driest month in Roseland?
How many days does it rain in January in Roseland?
How much does it snow in Roseland in January?
How many hours of daylight does Roseland have in January?
When are sunrise and sunset in January in Roseland?
How many hours of sunshine does Roseland have in January?
What are the months with the lowest UV index in Roseland?
How high is the UV index in January in Roseland?
Average temperature in January
Roseland, NJ
- Average high temperature in January: 35.2°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in January: 23.7°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in January
Roseland, NJ
- Average pressure in January: 30.06"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
Roseland, NJ
- Average wind speed in January: 8.9mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in January
Roseland, NJ
- Average humidity in January: 75%
The months with the highest relative humidity are February and December (78%).
The months with the lowest relative humidity are April and August (72%).
Average rainfall in January
Roseland, NJ
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in January
Roseland, NJ
- Average rainfall days in January: 6.1 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in January
Roseland, NJ
- Average snowfall in January: 0.63"
The month with the highest snowfall is March (1.22").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Roseland, NJ
- Average snowfall days in January: 4.5 days
The month with the highest number of snowfall days is February (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Roseland, 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: 5h and 1min
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 42min).
Average sunshine days in January
Roseland, NJ
- Average sunshine days in January: 20.8 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in January
Roseland, 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
Roseland, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in January
Roseland, 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).
Roseland, New Jersey, USA
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