January weather forecastNew Brunswick, NJ

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

January

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

New Brunswick experiences its lowest average temperatures in January, reaching a peak of 36.7°F (2.6°C) and a minimum 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. In New Brunswick, during the entire year, the rain falls for 149.4 days and collects up to 28.43" (722mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In January, it is snowing for 5.4 days. Throughout January, 1.57" (40mm) of snow is 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 is 9h and 40min.
On the first day of the month, sunrise is at 7:21 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:08 am and sunset at 5:14 pm EST.

Sunshine

In New Brunswick, the average sunshine in January 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 exposure to the Sun's UV rays for the ordinary person.
Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.

Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

January is New Brunswick's coldest month, registering average high temperatures of 36.7°F (2.6°C) and lows of 24.6°F (-4.1°C).

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

In January, the average relative humidity is 75%.

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

In New Brunswick, in January, snow falls for 5.4 days, with typically accumulated 1.57" (40mm) of snow.

In January, the average day length is 9h and 40min.

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, sunrise is at 7:08 am and sunset at 5:14 pm EST.

In January, the average sunshine duration is 5h.

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

In New Brunswick, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

43°F

36.7°F

39.9°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9mph

9.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

18.5

18.6

15.3

Average UV index

Average cloud cover

Average visibility

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).

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).

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).

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%).

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").

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).

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").

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).

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

Average daylight in January: 9h and 42min

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).

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).

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).

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).

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).