January weather forecast
Rossmoor, NJ

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Weather in January

January, the same as December, is an icy winter month in Rossmoor, New Jersey, with an average temperature fluctuating between 25°F (-3.9°C) and 37°F (2.8°C).

Temperature

January, with its average high-temperature of 37°F (2.8°C) and an average low-temperature of 25°F (-3.9°C), holds the record as the coldest month.

Humidity

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

Rainfall

In Rossmoor, in January, it is raining for 4.8 days, with typically 0.43" (11mm) of accumulated precipitation. In Rossmoor, during the entire year, the rain falls for 92.9 days and collects up to 7.32" (186mm) of precipitation.

Snowfall

Months with snowfall in Rossmoor are January through March, November and December. In Rossmoor, New Jersey, during January, snow falls for 3.3 days and regularly aggregates up to 0.28" (7mm) of snow. In Rossmoor, during the entire year, snow falls for 12.7 days and aggregates up to 1.5" (38mm) of snow.

Daylight

The average length of the day in January in Rossmoor, New Jersey, is 9h and 41min.
On the first day of January in Rossmoor, sunrise is at 7:20 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 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 estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 during January leads to these advisories:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What month is the coldest in Rossmoor?

Rossmoor's coldest weather arrives in January, when temperatures average a high of 37°F (2.8°C) and a low of 25°F (-3.9°C).

How cold is it in Rossmoor in January?

In Rossmoor, in January, the average high-temperature is 37°F (2.8°C), and the average low-temperature is 25°F (-3.9°C).

What is the average humidity in January in Rossmoor?

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

How much does it rain in Rossmoor in January?

In Rossmoor, in January, during 4.8 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

How many days does it snow in January in Rossmoor?

In Rossmoor, in January, during 3.3 snowfall days, 0.28" (7mm) of snow is typically accumulated.

What is the average length of the day in January in Rossmoor?

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

When are sunrise and sunset in January in Rossmoor?

In January, on the first day of the month, sunrise is at 7:20 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 Rossmoor?

In Rossmoor, New Jersey, the average sunshine duration in January is 5.1h.

When is the lowest UV index in Rossmoor?

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

What is the UV index intensity in January in Rossmoor?

In January, the average daily maximum UV index in Rossmoor is 2. A UV Index reading of 2, and below, represents 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
Rossmoor, NJ

Average temperature in January - Rossmoor, NJ
  • Average high temperature in January: 37°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 (37°F).

  • Average low temperature in January: 25°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).

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Average pressure in January
Rossmoor, NJ

Average pressure in January - Rossmoor, 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
Rossmoor, NJ

Average wind speed in January - Rossmoor, NJ
  • Average wind speed in January: 9.1mph

The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average humidity in January
Rossmoor, NJ

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

The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).

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Average rainfall in January
Rossmoor, NJ

Average rainfall in January - Rossmoor, NJ
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").

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Average rainfall days in January
Rossmoor, NJ

Average rainfall days in January - Rossmoor, NJ
  • Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).

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Average snowfall in January
Rossmoor, NJ

Average snowfall in January - Rossmoor, NJ
  • Average snowfall in January: 0.28"

The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
Rossmoor, NJ

Average snowfall days in January - Rossmoor, NJ
  • Average snowfall days in January: 3.3 days

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Rossmoor, 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 24min).

  • 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 42min).

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Average sunshine days in January
Rossmoor, NJ

Average sunshine days in January - Rossmoor, NJ
  • Average sunshine days in January: 24.2 days

The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).

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Average UV index in January
Rossmoor, NJ

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

The months with the highest UV index are May, 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
Rossmoor, NJ

Average cloud cover in January - Rossmoor, NJ
  • Average cloud cover in January: 44

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

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Average visibility in January
Rossmoor, NJ

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

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

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Rossmoor, New Jersey, USA

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