January weather forecast
Fairfield, NJ

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Weather in January

January, like December, in Fairfield, New Jersey, is an icy winter month, with an average temperature ranging between min 22.6°F (-5.2°C) and max 34.9°F (1.6°C).

Temperature

January, with its high-temperature average of 34.9°F (1.6°C) and a low-temperature average of 22.6°F (-5.2°C), is the coldest month.

Humidity

The average relative humidity in January in Fairfield is 76%.

Rainfall

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

Snowfall

Months with snowfall in Fairfield are January through May, November and December. In Fairfield, in January, snow falls for 6.6 days, with typically accumulated 1.89" (48mm) of snow. In Fairfield, during the entire year, snow falls for 24.3 days and aggregates up to 9.96" (253mm) of snow.

Daylight

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

Sunshine

In Fairfield, the average sunshine in January 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 Fairfield. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

What part of the year is the coldest in Fairfield?

January is Fairfield's coldest month, registering average high temperatures of 34.9°F (1.6°C) and lows of 22.6°F (-5.2°C).

How cold is it in Fairfield in January?

During January, Fairfield experiences an average high-temperature of 34.9°F (1.6°C) and a low-temperature of 22.6°F (-5.2°C).

What is the average humidity in January in Fairfield?

In January, the average relative humidity in Fairfield, New Jersey, is 76%.

What is the driest month in Fairfield?

January is the month with the least rainfall. Rain falls for 7.8 days and accumulates 1.57" (40mm) of precipitation.

How many days does it rain in January in Fairfield?

In Fairfield, New Jersey, during January, the rain falls for 7.8 days and regularly aggregates up to 1.57" (40mm) of precipitation.

How many days does it snow in January in Fairfield?

In Fairfield, 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 Fairfield?

The average day length in January is 9h and 38min.

What time are sunrise and sunset in January in Fairfield?

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, in Fairfield, sunrise is at 7:08 am and sunset at 5:12 pm EST.

How many hours of sunshine does Fairfield have in January?

The average sunshine duration in January is 5h.

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

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

What is the UV index reading in January in Fairfield?

In January, the average daily maximum UV index in Fairfield is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
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
Fairfield, NJ

Average temperature in January - Fairfield, 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).

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Average pressure in January
Fairfield, NJ

Average pressure in January - Fairfield, 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).

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Average wind speed in January
Fairfield, NJ

Average wind speed in January - Fairfield, 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).

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Average humidity in January
Fairfield, NJ

Average humidity in January - Fairfield, 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%).

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Average rainfall in January
Fairfield, NJ

Average rainfall in January - Fairfield, 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").

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Average rainfall days in January
Fairfield, NJ

Average rainfall days in January - Fairfield, 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).

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Average snowfall in January
Fairfield, NJ

Average snowfall in January - Fairfield, 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").

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Average snowfall days in January
Fairfield, NJ

Average snowfall days in January - Fairfield, 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).

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

Average daylight in January / Average sunshine in January - Fairfield, 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).

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Average sunshine days in January
Fairfield, NJ

Average sunshine days in January - Fairfield, 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).

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Average UV index in January
Fairfield, NJ

Average UV index in January - Fairfield, 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).

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Average cloud cover in January
Fairfield, NJ

Average cloud cover in January - Fairfield, 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).

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Average visibility in January
Fairfield, NJ

Average visibility in January - Fairfield, 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).

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Fairfield, New Jersey, USA

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