January weather forecast and climate
Westfield, NJ

Weather in January

January, like December, in Westfield, New Jersey, is another cold winter month, with average temperature fluctuating between 23.9°F (-4.5°C) and 36°F (2.2°C).

Temperature

With an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.9°F (-4.5°C), January is the coldest month.

Humidity

In Westfield, New Jersey, the average relative humidity is 75%.

Rainfall

In Westfield, in January, during 9.5 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, in Westfield, New Jersey, there are 160.7 rainfall days, and 30.12" (765mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Westfield, New Jersey, are January through May, October through December. In Westfield, in January, during 7.3 snowfall days, 2.09" (53mm) of snow is typically accumulated. In Westfield, during the entire year, snow falls for 25.4 days, and aggregates up to 10.31" (262mm) of snow.

Daylight

In Westfield, New Jersey, the average length of the day is 9.7h.

Sunshine

In January, the average sunshine is 5.1h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Westfield. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the coldest month in Westfield?

The coldest month in Westfield is January, with an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.9°F (-4.5°C).

What is the temperature in January in Westfield?

The average high-temperature, in January, in Westfield, New Jersey, is 36°F (2.2°C), while the average low-temperature is 23.9°F (-4.5°C).

What is the average humidity in January in Westfield?

The average relative humidity in January is 75%.

How much does it rain in Westfield in January?

In January, in Westfield, the rain falls for 9.5 days. Throughout January, 1.97" (50mm) of precipitation is accumulated.

How many days does it snow in January in Westfield?

In Westfield, in January, snow falls for 7.3 days, with typically accumulated 2.09" (53mm) of snow.

How many hours of daylight does Westfield have in January?

The average length of the day in January in Westfield is 9.7h.

How long on average sun shines in January in Westfield?

The average sunshine in January in Westfield is 5.1h.

What are the months with the lowest UV index in Westfield?

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

What is the UV index intensity in January in Westfield?

In January, the average daily maximum UV index in Westfield is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.

Average temperature in January
Westfield, NJ

Average temperature in January - Westfield, NJ
  • Average high temperature in January: 36°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in January: 23.9°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

[Resources]

Average pressure in January
Westfield, NJ

Average pressure in January - Westfield, NJ
  • Average pressure in January: 30.07"

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

[Resources]

Average wind speed in January
Westfield, NJ

Average wind speed in January - Westfield, NJ
  • Average wind speed in January: 8.8mph

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

[Resources]

Average humidity in January
Westfield, NJ

Average humidity in January - Westfield, NJ
  • Average humidity in January: 75%

Months with the highest relative humidity are February, October and December (78%).
Months with the lowest relative humidity are April and August (73%).

[Resources]

Average rainfall in January
Westfield, NJ

Average rainfall in January - Westfield, NJ
  • Average rainfall in January: 1.97"

The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.69").

[Resources]

Average rainfall days in January
Westfield, NJ

Average rainfall days in January - Westfield, NJ
  • Average rainfall days in January: 9.5 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.5 days).

[Resources]

Average snowfall in January
Westfield, NJ

Average snowfall in January - Westfield, NJ
  • Average snowfall in January: 2.09"

The month with the highest snowfall is March (3.23").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in January
Westfield, NJ

Average snowfall days in January - Westfield, NJ
  • Average snowfall days in January: 7.3 days

Months with the highest number of snowfall days are January and February (7.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in January /
Average sunshine in January
Westfield, NJ

Average daylight in January / Average sunshine in January - Westfield, 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: 5.1h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

[Resources]

Average sunshine days in January
Westfield, NJ

Average sunshine days in January - Westfield, 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).

[Resources]

Average UV index in January
Westfield, NJ

Average UV index in January - Westfield, 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).

[Resources]

Average cloud cover in January
Westfield, NJ

Average cloud cover in January - Westfield, NJ
  • Average cloud cover in January: 45

Months with the most cloud cover are February, March and December (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 32).

[Resources]

Average visibility in January
Westfield, NJ

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

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).

[Resources]