January weather forecast
Old Tappan, NJ

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Weather in January

January, like December, in Old Tappan, New Jersey, is a wintry winter month, with temperature in the range of an average low of 24.1°F (-4.4°C) and an average high of 35.4°F (1.9°C).

Temperature

January brings the lowest temperatures, with an average high of 35.4°F (1.9°C) and an average low of 24.1°F (-4.4°C).

Humidity

In January, the average relative humidity is 75%.

Rainfall

In Old Tappan, in January, during 8.2 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Old Tappan, during the entire year, the rain falls for 153.9 days and collects up to 30.75" (781mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In January, in Old Tappan, it is snowing for 6.9 days. Throughout January, 2.17" (55mm) of snow is accumulated. Throughout the year, in Old Tappan, New Jersey, there are 25.5 snowfall days, and 10.55" (268mm) of snow is accumulated.

Daylight

In Old Tappan, the average length of the day in January is 9h and 38min.
On the first day of January, sunrise is at 7:20 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:11 pm EST.

Sunshine

In January, the average sunshine 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. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 2 during January leads to these instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. To guard against the harmful effects of the Sun, minimize exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.

Frequently asked questions

What is the coldest month?

Old Tappan's coldest month, January, registers temperatures that range from a high of 35.4°F (1.9°C) to a low of 24.1°F (-4.4°C).

How cold is January?

The average high-temperature and low-temperature during January are 35.4°F (1.9°C) and 24.1°F (-4.4°C) respectively.

What is the average humidity in January?

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

How much does it rain in January?

In Old Tappan, in January, during 8.2 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

How many days does it snow in January?

In Old Tappan, in January, snow falls for 6.9 days, with typically accumulated 2.17" (55mm) of snow.

What is the average length of the day in January?

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

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:20 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:11 pm EST.

How long on average sun shines in January?

The average sunshine duration in January in Old Tappan is 5h.

What is the month with the lowest UV index?

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 reading in January in Old Tappan?

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Old Tappan, NJ

Average temperature in January - Old Tappan, NJ
  • Average high temperature in January: 35.4°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in January: 24.1°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

Average pressure in January
Old Tappan, NJ

Average pressure in January - Old Tappan, NJ
  • Average pressure in January: 30.06"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
Old Tappan, NJ

Average wind speed in January - Old Tappan, NJ
  • Average wind speed in January: 8.5mph

The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in January
Old Tappan, NJ

Average humidity in January - Old Tappan, NJ
  • Average humidity in January: 75%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (68%).

Average rainfall in January
Old Tappan, NJ

Average rainfall in January - Old Tappan, NJ
  • Average rainfall in January: 2.2"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in January
Old Tappan, NJ

Average rainfall days in January - Old Tappan, NJ
  • Average rainfall days in January: 8.2 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in January
Old Tappan, NJ

Average snowfall in January - Old Tappan, NJ
  • Average snowfall in January: 2.17"

The month with the highest snowfall is March (3.07").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Old Tappan, NJ

Average snowfall days in January - Old Tappan, NJ
  • Average snowfall days in January: 6.9 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Old Tappan, NJ

Average daylight in January / Average sunshine in January - Old Tappan, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in January
Old Tappan, NJ

Average sunshine days in January - Old Tappan, NJ
  • Average sunshine days in January: 18.1 days

The months with the most sunshine days are January and November (18.1 days).
The months with the least sunshine days are April and June (12.7 days).

Average UV index in January
Old Tappan, NJ

Average UV index in January - Old Tappan, 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
Old Tappan, NJ

Average cloud cover in January - Old Tappan, NJ
  • Average cloud cover in January: 45

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in January
Old Tappan, NJ

Average visibility in January - Old Tappan, 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).

Old Tappan, New Jersey, USA

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