Newark
New Jersey, USA
Long-term weather forecast
Long-term weather forecast

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, like December, in Newark, New Jersey, is a wintry winter month, with average temperature ranging between min 24.4°F (-4.2°C) and max 38.8°F (3.8°C).

Temperature

January is the coldest month, with an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 24.4°F (-4.2°C).

Rainfall

In January, the rain falls for 10.4 days. Throughout January, 3.5" (89.7mm) of precipitation is accumulated. In Newark, during the entire year, the rain falls for 122.2 days and collects up to 46.2" (1174.3mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December.

Ocean temperature

In Newark, the average seawater temperature in January is 41.7°F (5.4°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

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

Sunshine

The average sunshine in January is 5h.

UV index

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation for average individuals.
The daily maximum UV index of 2 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from 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.

What is the coldest month in Newark?

The coldest month in Newark, New Jersey, is January, with an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 24.4°F (-4.2°C).

What is the temperature in January in Newark?

The average high-temperature, in January, in Newark, New Jersey, is 38.8°F (3.8°C), while the average low-temperature is 24.4°F (-4.2°C).

How many days does it rain in January in Newark?

In Newark, in January, it is raining for 10.4 days, with typically 3.5" (89.7mm) of accumulated precipitation.

How many days does it snow in January in Newark?

In Newark, New Jersey, in January, snow falls for 5 days, with typically accumulated 8.9" (226.1mm) of snow.

How cold is the water in January in Newark?

In Newark, in January, the average water temperature 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 Newark, the average length of the day in January is 9.7h.

How long on average sun shines in January in Newark?

The average sunshine in January in Newark is 5h.

What is the UV index intensity in January in Newark?

The average daily maximum UV index in January in Newark, New Jersey, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.
Average temperature in January - Newark, NJ
  • Average high temperature in January: 38.8°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in January: 24.5°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (24.5°F).

Average rainfall in January - Newark, NJ
  • Average rainfall in January: 3.5"

The wettest month (with the highest rainfall) is July (4.8").
The driest month (with the lowest rainfall) is February (2.9").

Average rainfall days in January - Newark, NJ
  • Average rainfall days in January: 10.4 days

The month with the highest number of rainy days is April (11.5 days).
The month with the lowest number of rainy days is September (8.6 days).

Average snowfall in January - Newark, NJ
  • Average snowfall in January: 8.9"

The month with the highest snowfall is February (9.5").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in January - Newark, NJ
  • Average snowfall days in January: 5 days

The month with the highest number of snowfall days is January (5 days).
Months with the lowest number of 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 shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 5h

Months with most sunshine are June and July (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 4h).

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 8).
The month with the lowest UV index is December (UV index 1).