January weather forecast
Chester, NJ

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Weather in January

January, like December, in Chester, New Jersey, is an icy winter month, with temperature in the range of an average low of 22.3°F (-5.4°C) and an average high of 35.1°F (1.7°C).

Temperature

Chester's January weather, with an average high temperature of 35.1°F (1.7°C) and an average low temperature of 22.3°F (-5.4°C), tends to be the coldest of the year.

Humidity

The average relative humidity in January is 77%.

Rainfall

In Chester, in January, during 8.9 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 162.6 rainfall days, and 33.11" (841mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Chester, in January, snow falls for 8.3 days, with typically accumulated 2.91" (74mm) of snow. Throughout the year, in Chester, there are 28.5 snowfall days, and 14.49" (368mm) of snow is accumulated.

Daylight

In Chester, the average length of the day in January is 9h and 39min.
On the first day of January, sunrise is at 7:22 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:09 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 in Chester, New Jersey, are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: During January, 2 as the daily maximum UV index converts into the following advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

What month is the coldest in Chester?

January, characterized by an average high temperature of 35.1°F (1.7°C) and a low temperature of 22.3°F (-5.4°C), is generally the coldest month in Chester, New Jersey.

How cold is it in Chester in January?

In Chester, in January, the average high-temperature is 35.1°F (1.7°C), and the average low-temperature is 22.3°F (-5.4°C).

What is the average humidity in January in Chester?

The average relative humidity in January in Chester is 77%.

How much does it rain in Chester in January?

In Chester, New Jersey, in January, during 8.9 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

How many days does it snow in January in Chester?

In Chester, in January, during 8.3 snowfall days, 2.91" (74mm) of snow is typically accumulated.

How many hours of daylight does Chester have in January?

The average day length in January in Chester is 9h and 39min.

When are sunrise and sunset in January in Chester?

On the first day of January, sunrise is at 7:22 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:14 pm EST.

How long on average sun shines in January in Chester?

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

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

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

What is the UV index reading in January in Chester?

In Chester, New Jersey, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Chester, NJ

Average temperature in January - Chester, NJ
  • Average high temperature in January: 35.1°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in January: 22.3°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

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Average pressure in January
Chester, NJ

Average pressure in January - Chester, 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
Chester, NJ

Average wind speed in January - Chester, NJ
  • Average wind speed in January: 8.1mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in January
Chester, NJ

Average humidity in January - Chester, NJ
  • Average humidity in January: 77%

The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in January
Chester, NJ

Average rainfall in January - Chester, NJ
  • Average rainfall in January: 2.24"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in January
Chester, NJ

Average rainfall days in January - Chester, NJ
  • Average rainfall days in January: 8.9 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is January (8.9 days).

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Average snowfall in January
Chester, NJ

Average snowfall in January - Chester, NJ
  • Average snowfall in January: 2.91"

The month with the highest snowfall is March (4.49").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Chester, NJ

Average snowfall days in January - Chester, NJ
  • Average snowfall days in January: 8.3 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Chester, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in January
Chester, NJ

Average sunshine days in January - Chester, NJ
  • Average sunshine days in January: 17 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in January
Chester, NJ

Average UV index in January - Chester, NJ
  • Average UV index in January: 2

The months with the highest UV index are June and July (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
Chester, NJ

Average cloud cover in January - Chester, NJ
  • Average cloud cover in January: 46

The months with the most cloud cover are February 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
Chester, NJ

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

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

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Chester, New Jersey, USA

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