January weather forecastAtlantic City, NJ

Clear blue waters approaching the sandy beach of the distant Atlantic City in New Jersey

January

Weather in January

Atlantic City experiences a chilly start to the year, as January brings a wintry mix of snow and rain. Typically, the mercury fluctuates from 31.1°F (-0.5°C) to a high of 39.9°F (4.4°C). An average UV index of 2 indicates minimal solar radiation, making it safe for outdoor activities without the risk of sunburn. However, the Atlantic sea remains icy cold, discouraging water sports. The weather gradually warms up towards the end of the month, opening the way for occasional glimpses of spring.

Temperature

January tends to be the coldest month in Atlantic City, New Jersey, with temperatures averaging a daily high of 39.9°F (4.4°C) and a low of 31.1°F (-0.5°C).

Humidity

The average relative humidity in January in Atlantic City, New Jersey, is 74%.

Rainfall

January is the month with the least rainfall in Atlantic City. Rain falls for 7.4 days and accumulates 0.71" (18mm) of precipitation.

Snowfall

January through March and December are months with snowfall in Atlantic City, New Jersey. January is the month with the most snowfall. Snow falls for 3.7 days and accumulates 0.63" (16mm) of snow.

Ocean temperature

In January, the average ocean temperature is 42.4°F (5.8°C).
Note: Navigating the 42.4°F (5.8°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

The average length of the day in January in Atlantic City is 9h and 46min.
On the first day of January, sunrise is at 7:17 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:16 pm EST.

Sunshine

In January, the average sunshine is 5.4h.

UV index

January, February 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 radiation for the ordinary person.
Note: The maximum UV index of 2 during January leads to these 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. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.

Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Atlantic City, January is the month with the lowest recorded average temperatures, measuring a high of 39.9°F (4.4°C) and a low of 31.1°F (-0.5°C).

Atlantic City in January has an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 31.1°F (-0.5°C).

In Atlantic City, the average relative humidity in January is 74%.

January is the month with the least rainfall. Rain falls for 7.4 days and accumulates 0.71" (18mm) of precipitation.

In Atlantic City, New Jersey, in January, during 7.4 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

January is the month with the most snowfall in Atlantic City, New Jersey. Snow falls for 3.7 days and accumulates 0.63" (16mm) of snow.

In Atlantic City, New Jersey, in January, snow falls for 3.7 days, with typically accumulated 0.63" (16mm) of snow.

In January, the average ocean temperature in Atlantic City, New Jersey, is 42.4°F (5.8°C). Swimming in 42.4°F (5.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

The average day length in January in Atlantic City is 9h and 46min.

On the first day of January, sunrise is at 7:17 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:16 pm EST.

The average sunshine duration in January in Atlantic City, New Jersey, is 5.4h.

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

In January, the average daily maximum UV index in Atlantic City is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

46.2°F

39.9°F

42.3°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.2mph

13.7mph

13.4mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

1.9

3.7

2.5

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

20.5

20.3

17.3

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Atlantic City, NJ

Average high temperature in January: 39.9°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (39.9°F).

Average low temperature in January: 31.1°F

The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

Average pressure in January
Atlantic City, 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 (29.94"Hg).

Average wind speed in January
Atlantic City, NJ

Average wind speed in January: 12.9mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).

Average humidity in January
Atlantic City, NJ

Average humidity in January: 74%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).

Average rainfall in January
Atlantic City, NJ

Average rainfall in January: 0.71"

The wettest month (with the highest rainfall) is October (1.26").
The driest month (with the least rainfall) is January (0.71").

Average rainfall days in January
Atlantic City, NJ

Average rainfall days in January: 7.4 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is November (6.9 days).

Average snowfall in January
Atlantic City, NJ

Average snowfall in January: 0.63"

The month with the highest snowfall is January (0.63").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in January
Atlantic City, NJ

Average snowfall days in January: 3.7 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in January
Atlantic City, NJ

Average sea temperature in January: 42.5°F

The best month for swimming (with the highest average sea temperature) is August (76.6°F).
The coldest month (with the lowest average sea temperature) is February (40.5°F).

Average daylight in January /
Average sunshine in January
Atlantic City, NJ

Average daylight in January: 9h and 48min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

Average sunshine in January: 5h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in January
Atlantic City, NJ

Average sunshine days in January: 20.3 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (14.6 days).

Average UV index in January
Atlantic City, 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 and December (UV index 2).

Average cloud cover in January
Atlantic City, NJ

Average cloud cover in January: 42

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 26).

Average visibility in January
Atlantic City, 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).