January weather forecast
South Amboy, NJ

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Weather in January

January, like December, in South Amboy, New Jersey, is an icy winter month, with temperature in the range of an average low of 25.9°F (-3.4°C) and an average high of 36.9°F (2.7°C).

Temperature

In South Amboy, New Jersey, January is the month with the lowest recorded average temperatures, measuring a high of 36.9°F (2.7°C) and a low of 25.9°F (-3.4°C).

Humidity

In South Amboy, the average relative humidity in January is 74%.

Rainfall

In South Amboy, in January, during 9.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, in South Amboy, there are 157.5 rainfall days, and 31.42" (798mm) of precipitation is accumulated.

Snowfall

Months with snowfall in South Amboy are January through April, October through December. In January, it is snowing for 5.8 days. Throughout January, 1.57" (40mm) of snow is accumulated. In South Amboy, during the entire year, snow falls for 19.5 days and aggregates up to 8.35" (212mm) of snow.

Daylight

In South Amboy, the average length of the day in January is 9h and 40min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:40 pm. On the last day of January, in South Amboy, sunrise is at 7:07 am and sunset at 5:13 pm EST.

Sunshine

In South Amboy, the average sunshine in January 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 low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, an average UV index of 2 transforms into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in South Amboy?

South Amboy, New Jersey, notes the coldest temperatures in January, with a average high of 36.9°F (2.7°C) and a low of 25.9°F (-3.4°C).

How cold is January in South Amboy?

In South Amboy, 36.9°F (2.7°C) is the average high-temperature and 25.9°F (-3.4°C) is the average low-temperature during January.

What is the average humidity in January in South Amboy?

In January, the average relative humidity is 74%.

How much does it rain in South Amboy in January?

In South Amboy, New Jersey, in January, it is raining for 9.3 days, with typically 2.01" (51mm) of accumulated precipitation.

How many days does it snow in January in South Amboy?

In South Amboy, New Jersey, during January, snow falls for 5.8 days and regularly aggregates up to 1.57" (40mm) of snow.

How many hours of daylight does South Amboy have in January?

In South Amboy, the average day length in January is 9h and 40min.

What time are sunrise and sunset in January in South Amboy?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:40 pm. On the last day of the month, in South Amboy, New Jersey, sunrise is at 7:07 am and sunset at 5:13 pm EST.

How long on average sun shines in January in South Amboy?

In South Amboy, the average sunshine duration in January is 5.1h.

When is the lowest UV index in South Amboy?

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

What is the UV index reading in January in South Amboy?

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

Average temperature in January - South Amboy, NJ
  • Average high temperature in January: 36.9°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in January: 25.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

Average pressure in January
South Amboy, NJ

Average pressure in January - South Amboy, 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).

Average wind speed in January
South Amboy, NJ

Average wind speed in January - South Amboy, NJ
  • Average wind speed in January: 10.2mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in January
South Amboy, NJ

Average humidity in January - South Amboy, NJ
  • Average humidity in January: 74%

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

Average rainfall in January
South Amboy, NJ

Average rainfall in January - South Amboy, NJ
  • Average rainfall in January: 2.01"

The wettest months (with the highest rainfall) are July and December (3.31").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in January
South Amboy, NJ

Average rainfall days in January - South Amboy, NJ
  • Average rainfall days in January: 9.3 days

The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in January
South Amboy, NJ

Average snowfall in January - South Amboy, NJ
  • Average snowfall in January: 1.57"

The month with the highest snowfall is March (3.39").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
South Amboy, NJ

Average snowfall days in January - South Amboy, NJ
  • Average snowfall days in January: 5.8 days

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
South Amboy, NJ

Average daylight in January / Average sunshine in January - South Amboy, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in January
South Amboy, NJ

Average sunshine days in January - South Amboy, NJ
  • Average sunshine days in January: 17.3 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (12.2 days).

Average UV index in January
South Amboy, NJ

Average UV index in January - South Amboy, 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
South Amboy, NJ

Average cloud cover in January - South Amboy, NJ
  • Average cloud cover in January: 45

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in January
South Amboy, NJ

Average visibility in January - South Amboy, 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).

South Amboy, New Jersey, USA

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