January weather forecast
Newark, NJ

Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
°Celsius°Fahrenheit
Share

Contents

A mirrored reflection of Newark City in New Jersey, on the Passaic River
A mirrored reflection of Newark City in New Jersey, on the Passaic River

Weather in January

January in Newark, New Jersey, USA, greets residents with an atmosphere dominated by chilly temperatures and a decent amount of precipitation. An extended period of daylight, reaching up to 9.7 hours per day, allows for enough sunlight despite the wintry conditions. Nevertheless, with relative humidity averaging at 74% and moderate cloud coverage, a cold yet humid environment prevails. This is further complemented by snowfall averaging 1.73" (44mm), lending a characteristic wintery touch to the landscape. The air pressure stabilizes around 30.06 in, contributing to the month's crisp and frosty ambiance.

Temperature

January, on average, is the coldest month, registering a high temperature of 36.3°F (2.4°C) and a low of 25.7°F (-3.5°C).

Humidity

In January, the average relative humidity in Newark is 74%.

Rainfall

In January, in Newark, New Jersey, the rain falls for 9.7 days. Throughout January, 1.97" (50mm) of precipitation is accumulated. Throughout the year, in Newark, there are 161.1 rainfall days, and 30.67" (779mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Newark, in January, snow falls for 6.1 days, with typically accumulated 1.73" (44mm) of snow. Throughout the year, in Newark, there are 20.9 snowfall days, and 8.94" (227mm) of snow is accumulated.

Ocean temperature

In Newark, the average seawater temperature in January is 41.7°F (5.4°C).
Note: Engaging in a swim in 41.7°F (5.4°C) can threaten life. Brief exposure to 55.4°F (13°C) waters is uneasy, and submersion below 50°F (10°C) can lead to cold shock and disrupted breathing patterns, varying by individual.

Daylight

In Newark, New Jersey, 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 Newark, 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. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 2 during January translates into the following directions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
[Resources]

Frequently asked questions

What time of the year is the coldest in Newark?

Newark, New Jersey, records the coldest temperatures in January, averaging a high of 36.3°F (2.4°C) and a low of 25.7°F (-3.5°C).

How cold is January in Newark?

The high-temperature, in January, in Newark, records 36.3°F (2.4°C), while the low-temperature is 25.7°F (-3.5°C).

What is the average humidity in January in Newark?

The average relative humidity in January in Newark, New Jersey, is 74%.

How many days does it rain in January in Newark?

In Newark, New Jersey, in January, during 9.7 rainfall days, 1.97" (50mm) of precipitation is typically accumulated.

How much does it snow in Newark in January?

In January, it is snowing for 6.1 days. Throughout January, 1.73" (44mm) of snow is accumulated.

What is the ocean temperature in January in Newark?

In Newark, New Jersey, in January, the average water temperature is 41.7°F (5.4°C). Swimming in 41.7°F (5.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in January in Newark?

In Newark, the average day length in January is 9h and 39min.

When are sunrise and sunset in January in Newark?

On the first day of January in Newark, sunrise is at 7:20 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:12 pm EST.

How long on average sun shines in January in Newark?

The average sunshine duration in January in Newark, New Jersey, is 5.2h.

When is the lowest UV index in Newark?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Newark.

What is the UV index reading in January in Newark?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
42.1°F 5.6°C
36.3°F 2.4°C
39.2°F 4°C
Average low temperature
32.9°F 0.5°C
25.7°F -3.5°C
27.3°F -2.6°C
Average pressure
30.08" 764mmHg
30.06" 764mmHg
30.04" 763mmHg
Average wind speed
9.2mph 14.8km/h
9.8mph 15.8km/h
9.6mph 15.4km/h
Average max. wind speed
9.9mph 15.9km/h
10.4mph 16.7km/h
10.3mph 16.6km/h
Average wind speed gusts
13.5mph 21.7km/h
14.3mph 23km/h
14.4mph 23.2km/h
Average humidity
76%
74%
76%
Average rainfall
3.19" 81mm
1.97" 50mm
2.17" 55mm
Average rainfall days
11.9
9.7
9.7
Average snowfall
1.38" 35mm
1.73" 44mm
1.97" 50mm
Average snowfall days
3.6
6.1
5.8
Average sea temperature
47.2°F 8.4°C
41.7°F 5.4°C
39.7°F 4.3°C
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
4h 5min
5h 1min
4h 5min
Average sunshine days
15.6
17.3
14.9
Average UV index
2
2
2
Average cloud cover
47%
43%
47%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Newark, NJ

Average temperature in January - Newark, NJ
  • Average high temperature in January: 36.3°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in January: 25.7°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

[Resources]

Average pressure in January
Newark, NJ

Average pressure in January - Newark, 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).

[Resources]

Average wind speed in January
Newark, NJ

Average wind speed in January - Newark, 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 (6.3mph).

[Resources]

Average humidity in January
Newark, NJ

Average humidity in January - Newark, NJ
  • Average humidity in January: 74%

The months with the highest relative humidity are February, May, October and December (76%).
The months with the lowest relative humidity are April and August (72%).

[Resources]

Average rainfall in January
Newark, NJ

Average rainfall in January - Newark, NJ
  • Average rainfall in January: 1.97"

The wettest months (with the highest rainfall) are July and December (3.19").
The driest month (with the least rainfall) is September (1.65").

[Resources]

Average rainfall days in January
Newark, NJ

Average rainfall days in January - Newark, NJ
  • Average rainfall days in January: 9.7 days

The months with the highest number of rainy days are May and July (17.1 days).
The month with the least rainy days is November (9.5 days).

[Resources]

Average snowfall in January
Newark, NJ

Average snowfall in January - Newark, NJ
  • Average snowfall in January: 1.73"

The month with the highest snowfall is March (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in January
Newark, NJ

Average snowfall days in January - Newark, NJ
  • Average snowfall days in January: 6.1 days

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average sea temperature in January
Newark, NJ

Average sea temperature in January - Newark, 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).

[Resources]

Average daylight in January /
Average sunshine in January
Newark, NJ

Average daylight in January / Average sunshine in January - Newark, NJ
  • Average daylight in January: 9h and 4min

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 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 48min).

[Resources]

Average sunshine days in January
Newark, NJ

Average sunshine days in January - Newark, NJ
  • Average sunshine days in January: 17.3 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.4 days).

[Resources]

Average UV index in January
Newark, NJ

Average UV index in January - Newark, 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).

[Resources]

Average cloud cover in January
Newark, NJ

Average cloud cover in January - Newark, NJ
  • Average cloud cover in January: 43

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).

[Resources]

Average visibility in January
Newark, NJ

Average visibility in January - Newark, 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).

[Resources]

Newark, New Jersey, USA

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location