January weather forecast
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

Weather in January

January, like December, in Newark, New Jersey, is a wintry winter month, with temperature in the range of an average low of 25.7°F (-3.5°C) and an average high of 36.3°F (2.4°C).

Temperature

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

Humidity

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

Rainfall

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

Snowfall

January through April, November and December are months with snowfall. In Newark, snow falls for 6.1 days, with typically accumulated 1.73" (44mm) of snow. In Newark, New Jersey, during the entire year, snow falls for 20.9 days and aggregates up to 8.94" (227mm) of snow.

Ocean temperature

In January, the average ocean temperature in Newark is 41.7°F (5.4°C).
Note: Swimming in 41.7°F (5.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

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

Sunshine

In Newark, the average sunshine in January is 5.2h.

UV index

The 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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Newark?

The coldest month in Newark, New Jersey, 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 average humidity in January in Newark?

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

How much does it rain in Newark in January?

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

How much does it snow in Newark in January?

In Newark, New Jersey, during January, snow falls for 6.1 days and regularly aggregates up to 1.73" (44mm) of snow.

What is the ocean temperature in January in Newark?

In Newark, New Jersey, the average seawater temperature in January is 41.7°F (5.4°C). Swimming in 41.7°F (5.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

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

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

When is the sunrise / sunset in January in Newark?

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

How many hours of sunshine does Newark have in January?

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

When is the lowest UV index in Newark?

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

What is the UV index reading in January in Newark?

The average daily maximum UV index in January in Newark, New Jersey, is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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 39min

The month with the longest days is June (Average daylight: 15h and 3min).
The month with the shortest days is December (Average daylight: 9h and 19min).

  • 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).

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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).

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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).

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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).

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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).

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