January weather forecast and climate
Newark, NJ

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
January, the same as December, is another cold winter month in Newark, New Jersey, with average temperature fluctuating between 25.7°F (-3.5°C) and 36.3°F (2.4°C).

Temperature

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

Humidity

In Newark, the average relative humidity is 74%.

Rainfall

In Newark, during January, the rain falls for 9.7 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Newark, during the entire year, the rain falls for 161.1 days and collects up to 30.67" (779mm) of precipitation.

Snowfall

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

Ocean temperature

In January, the average ocean temperature is 41.7°F (5.4°C).
Note: 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.

Daylight

In January, the average length of the day is 9.7h.

Sunshine

In Newark, the average sunshine is 5.2h.

UV index

Months with the lowest UV index in Newark are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Newark?

The coldest month in Newark is January, with an average high-temperature of 36.3°F (2.4°C) and an average low-temperature of 25.7°F (-3.5°C).

What is the temperature in January in Newark?

In Newark, in January, the average high-temperature is 36.3°F (2.4°C), and the average low-temperature is 25.7°F (-3.5°C).

What is the average humidity in January in Newark?

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

How much does it rain in Newark in January?

In Newark, in January, it is raining for 9.7 days, with typically 1.97" (50mm) of accumulated precipitation.

How much does it snow in Newark in January?

In Newark, New Jersey, in January, during 6.1 snowfall days, 1.73" (44mm) of snow is typically accumulated.

How cold is the water 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?

The average length of the day in January in Newark, New Jersey, is 9.7h.

How long on average sun shines in January in Newark?

In January, the average sunshine is 5.2h.

What is the month with 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 in Newark is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to the UV radiation.
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).

Average pressure in January - Newark, NJ
  • Average pressure in January: 30.06"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

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).

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

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

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").

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

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).

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

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

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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).

Average daylight in January / Average sunshine in January - Newark, NJ
  • Average daylight in January: 9.7h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 5.2h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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).

Average UV index in January - Newark, NJ
  • Average UV index in January: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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

Months with the most cloud cover are February, March and December (Cloud cover 47).
Months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in January - Newark, NJ
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).