January weather forecast
Monmouth Junction, NJ

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Weather in January

January, the same as December, is another cold winter month in Monmouth Junction, New Jersey, with temperature in the range of an average high of 36.9°F (2.7°C) and an average low of 24.3°F (-4.3°C).

Temperature

January proves to be the coldest month, recording an average maximum temperature of 36.9°F (2.7°C) and a minimum temperature of 24.3°F (-4.3°C).

Humidity

In Monmouth Junction, New Jersey, the average relative humidity in January is 75%.

Rainfall

In Monmouth Junction, New Jersey, in January, during 6.1 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, in Monmouth Junction, there are 119.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. In Monmouth Junction, in January, snow falls for 4.6 days, with typically accumulated 0.79" (20mm) of snow. In Monmouth Junction, during the entire year, snow falls for 16.4 days and aggregates up to 4.41" (112mm) of snow.

Daylight

The average length of the day in January in Monmouth Junction is 9h and 41min.
On the first day of January, sunrise is at 7:21 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:14 pm EST.

Sunshine

In January, the average sunshine in Monmouth Junction 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. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in January transforms into the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

What is the coldest month in Monmouth Junction?

With average high and low temperatures of 36.9°F (2.7°C) and 24.3°F (-4.3°C) respectively, January is Monmouth Junction's coldest month.

How cold is it in Monmouth Junction in January?

In Monmouth Junction, in January, the average high-temperature is 36.9°F (2.7°C), and the average low-temperature is 24.3°F (-4.3°C).

What is the average humidity in January in Monmouth Junction?

In Monmouth Junction, the average relative humidity in January is 75%.

How many days does it rain in January in Monmouth Junction?

In Monmouth Junction, New Jersey, in January, during 6.1 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How many days does it snow in January in Monmouth Junction?

In Monmouth Junction, New Jersey, in January, during 4.6 snowfall days, 0.79" (20mm) of snow is typically accumulated.

How many hours of daylight does Monmouth Junction have in January?

In January, the average day length in Monmouth Junction, New Jersey, is 9h and 41min.

When are sunrise and sunset in January in Monmouth Junction?

On the first day of January, sunrise is at 7:21 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:14 pm EST.

How long on average sun shines in January in Monmouth Junction?

The average sunshine duration in January is 5.1h.

What are the months with the lowest UV index in Monmouth Junction?

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

How high is the UV index in January in Monmouth Junction?

In Monmouth Junction, New Jersey, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's 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
Monmouth Junction, NJ

Average temperature in January - Monmouth Junction, NJ
  • Average high temperature in January: 36.9°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in January: 24.3°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in January
Monmouth Junction, NJ

Average pressure in January - Monmouth Junction, 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
Monmouth Junction, NJ

Average wind speed in January - Monmouth Junction, NJ
  • Average wind speed in January: 8.5mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in January
Monmouth Junction, NJ

Average humidity in January - Monmouth Junction, NJ
  • Average humidity in January: 75%

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in January
Monmouth Junction, NJ

Average rainfall in January - Monmouth Junction, NJ
  • Average rainfall in January: 0.71"

The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is September (0.67").

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Average rainfall days in January
Monmouth Junction, NJ

Average rainfall days in January - Monmouth Junction, NJ
  • Average rainfall days in January: 6.1 days

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in January
Monmouth Junction, NJ

Average snowfall in January - Monmouth Junction, NJ
  • Average snowfall in January: 0.79"

The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Monmouth Junction, NJ

Average snowfall days in January - Monmouth Junction, NJ
  • Average snowfall days in January: 4.6 days

The month with the highest number of snowfall days is January (4.6 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
Monmouth Junction, NJ

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 5h and 1min

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 48min).

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Average sunshine days in January
Monmouth Junction, NJ

Average sunshine days in January - Monmouth Junction, NJ
  • Average sunshine days in January: 21.8 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index in January
Monmouth Junction, NJ

Average UV index in January - Monmouth Junction, 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
Monmouth Junction, NJ

Average cloud cover in January - Monmouth Junction, NJ
  • Average cloud cover in January: 44

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 33).

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Average visibility in January
Monmouth Junction, NJ

Average visibility in January - Monmouth Junction, 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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Monmouth Junction, New Jersey, USA

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