January weather forecast
New Brunswick, NJ

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An aerial panorama of the city of Brunswick, New Jersey, seen with its deep tree cover, a large river, and bridges over the river
An aerial panorama of the city of Brunswick, New Jersey, seen with its deep tree cover, a large river, and bridges over the river

Weather in January

Despite being the first month of the year, January presents the New Brunswick climate in its coolest splendor. This is defined by temperatures that barely rise above the freezing point coupled with some snowfall. Sunshine dawns on the city for around half the daylight hours offering a welcome respite from the generally cold and cloudy days. The subsequent windy conditions raise a unique challenge, especially toward the month's end. All these signify a clear starkness in the climate between the last month of the previous year and the first month of the new year with primary variations defined by lower temperatures of 24.6°F (-4.1°C) to 36.7°F (2.6°C), snowfall of 1.57" (40mm), and relative humidity at 75%.

Temperature

During the coldest month in New Brunswick, New Jersey, January, temperatures average a high of 36.7°F (2.6°C) and a low of 24.6°F (-4.1°C).

Humidity

In New Brunswick, the average relative humidity in January is 75%.

Rainfall

In New Brunswick, in January, it is raining for 7.9 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 149.4 rainfall days, and 28.43" (722mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. In New Brunswick, in January, during 5.4 snowfall days, 1.57" (40mm) of snow is typically accumulated. In New Brunswick, during the entire year, snow falls for 18.3 days and aggregates up to 8.46" (215mm) of snow.

Daylight

In January, the average length of the day in New Brunswick, New Jersey, is 9h and 40min.
On the first day of January, sunrise is at 7:21 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:14 pm EST.

Sunshine

In January, the average sunshine is 5h.

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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What part of the year is the coldest in New Brunswick?

The coldest temperatures in New Brunswick, New Jersey, occur during January, when averages reach a peak of 36.7°F (2.6°C) and a low of 24.6°F (-4.1°C).

How cold is January in New Brunswick?

The high-temperature in New Brunswick, New Jersey, during January is 36.7°F (2.6°C) and the low-temperature is 24.6°F (-4.1°C).

What is the average humidity in January in New Brunswick?

In New Brunswick, New Jersey, the average relative humidity in January is 75%.

How many days does it rain in January in New Brunswick?

In New Brunswick, in January, during 7.9 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

How much does it snow in New Brunswick in January?

In January, in New Brunswick, it is snowing for 5.4 days. Throughout January, 1.57" (40mm) of snow is accumulated.

What is the average length of the day in January in New Brunswick?

In January, the average day length in New Brunswick, New Jersey, is 9h and 40min.

When are sunrise and sunset in January in New Brunswick?

In January, on the first day of the month, sunrise is at 7:21 am and sunset at 4:41 pm. On the last day of the month, in New Brunswick, New Jersey, sunrise is at 7:08 am and sunset at 5:14 pm EST.

How many hours of sunshine does New Brunswick have in January?

In January, the average sunshine duration in New Brunswick, New Jersey, is 5h.

When is the lowest UV index in New Brunswick?

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

How high is the UV index in January in New Brunswick?

The average daily maximum UV index in January in New Brunswick, New Jersey, is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
New Brunswick, NJ

Average temperature in January - New Brunswick, NJ
  • Average high temperature in January: 36.7°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in January: 24.6°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in January
New Brunswick, NJ

Average pressure in January - New Brunswick, NJ
  • Average pressure in January: 30.07"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
New Brunswick, NJ

Average wind speed in January - New Brunswick, NJ
  • Average wind speed in January: 8.9mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

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Average humidity in January
New Brunswick, NJ

Average humidity in January - New Brunswick, NJ
  • Average humidity in January: 75%

The months with the highest relative humidity are February, October and December (77%).
The months with the lowest relative humidity are April and August (72%).

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Average rainfall in January
New Brunswick, NJ

Average rainfall in January - New Brunswick, NJ
  • Average rainfall in January: 1.73"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in January
New Brunswick, NJ

Average rainfall days in January - New Brunswick, NJ
  • Average rainfall days in January: 7.9 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in January
New Brunswick, NJ

Average snowfall in January - New Brunswick, NJ
  • Average snowfall in January: 1.57"

The month with the highest snowfall is March (3.5").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
New Brunswick, NJ

Average snowfall days in January - New Brunswick, NJ
  • Average snowfall days in January: 5.4 days

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
New Brunswick, NJ

Average daylight in January / Average sunshine in January - New Brunswick, 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 0min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in January
New Brunswick, NJ

Average sunshine days in January - New Brunswick, NJ
  • Average sunshine days in January: 18.6 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (11.1 days).

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Average UV index in January
New Brunswick, NJ

Average UV index in January - New Brunswick, NJ
  • Average UV index in January: 2

The months with the highest UV index are May, 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
New Brunswick, NJ

Average cloud cover in January - New Brunswick, NJ
  • Average cloud cover in January: 45

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in January
New Brunswick, NJ

Average visibility in January - New Brunswick, NJ
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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New Brunswick, New Jersey, USA

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