January weather forecast
West Caldwell, NJ

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Weather in January

January, like December, in West Caldwell, New Jersey, is a wintry winter month, with an average temperature varying between 34.9°F (1.6°C) and 22.6°F (-5.2°C).

Temperature

In West Caldwell, January records the lowest average temperatures, peaking at 34.9°F (1.6°C) and reaching a low of 22.6°F (-5.2°C).

Humidity

The average relative humidity in January is 76%.

Rainfall

The month with the least rainfall is January, when the rain falls for 7.8 days and typically collects 1.57" (40mm) of precipitation.

Snowfall

Months with snowfall in West Caldwell, New Jersey, are January through May, November and December. In West Caldwell, in January, snow falls for 6.6 days, with typically accumulated 1.89" (48mm) of snow. Throughout the year, there are 24.3 snowfall days, and 9.96" (253mm) of snow is accumulated.

Daylight

In West Caldwell, New Jersey, the average length of the day in January is 9h and 38min.
On the first day of January in West Caldwell, sunrise is at 7:21 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:12 pm EST.

Sunshine

The average sunshine in January in West Caldwell is 5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in West Caldwell. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In January, the maximum UV index of 2 transforms into these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in West Caldwell?

West Caldwell's temperature records reveal January as the coldest month, marked by average highs of 34.9°F (1.6°C) and lows of 22.6°F (-5.2°C).

How cold is it in West Caldwell in January?

The high-temperature in West Caldwell during January is 34.9°F (1.6°C) and the low-temperature is 22.6°F (-5.2°C).

What is the average humidity in January in West Caldwell?

In West Caldwell, the average relative humidity in January is 76%.

What is the driest month in West Caldwell?

The month with the least rainfall is January, when the rain falls for 7.8 days and typically collects 1.57" (40mm) of precipitation.

How many days does it rain in January in West Caldwell?

In January, in West Caldwell, the rain falls for 7.8 days. Throughout January, 1.57" (40mm) of precipitation is accumulated.

How many days does it snow in January in West Caldwell?

In West Caldwell, New Jersey, in January, during 6.6 snowfall days, 1.89" (48mm) of snow is typically accumulated.

What is the average length of the day in January in West Caldwell?

The average day length in January in West Caldwell, New Jersey, is 9h and 38min.

When is the sunrise / sunset in January in West Caldwell?

In January, on the first day of the month, sunrise is at 7:21 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:12 pm EST.

How many hours of sunshine does West Caldwell have in January?

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

When is the lowest UV index in West Caldwell?

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

What is the UV index intensity in January in West Caldwell?

In January, the average daily maximum UV index in West Caldwell, New Jersey, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
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
West Caldwell, NJ

Average temperature in January - West Caldwell, NJ
  • Average high temperature in January: 34.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in January: 22.6°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in January
West Caldwell, NJ

Average pressure in January - West Caldwell, 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).

Average wind speed in January
West Caldwell, NJ

Average wind speed in January - West Caldwell, NJ
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in January
West Caldwell, NJ

Average humidity in January - West Caldwell, NJ
  • Average humidity in January: 76%

The months with the highest relative humidity are February and December (79%).
The months with the lowest relative humidity are April and August (73%).

Average rainfall in January
West Caldwell, NJ

Average rainfall in January - West Caldwell, NJ
  • Average rainfall in January: 1.57"

The wettest month (with the highest rainfall) is July (3.15").
The driest month (with the least rainfall) is January (1.57").

Average rainfall days in January
West Caldwell, NJ

Average rainfall days in January - West Caldwell, NJ
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in January
West Caldwell, NJ

Average snowfall in January - West Caldwell, NJ
  • Average snowfall in January: 1.89"

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in January
West Caldwell, NJ

Average snowfall days in January - West Caldwell, NJ
  • Average snowfall days in January: 6.6 days

The month with the highest number of snowfall days is February (7 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
West Caldwell, NJ

Average daylight in January / Average sunshine in January - West Caldwell, NJ
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
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
West Caldwell, NJ

Average sunshine days in January - West Caldwell, NJ
  • Average sunshine days in January: 18.5 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in January
West Caldwell, NJ

Average UV index in January - West Caldwell, 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).

Average cloud cover in January
West Caldwell, NJ

Average cloud cover in January - West Caldwell, NJ
  • Average cloud cover in January: 45

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

Average visibility in January
West Caldwell, NJ

Average visibility in January - West Caldwell, 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).

West Caldwell, New Jersey, USA

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