January weather forecast
South Seaville, NJ

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Weather in January

January, the same as December, is an icy winter month in South Seaville, New Jersey, with an average temperature fluctuating between 31.3°F (-0.4°C) and 40.1°F (4.5°C).

Temperature

In South Seaville, the month of January is known for its lowest average temperatures, reaching a high of 40.1°F (4.5°C) and a low of 31.3°F (-0.4°C).

Humidity

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

Rainfall

January is the month with the least rainfall. Rain falls for 7 days and accumulates 0.67" (17mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. The month with the most snowfall in South Seaville is January, when snow falls for 4.7 days and typically aggregates up to 0.59" (15mm) of snow.

Daylight

In South Seaville, the average length of the day in January is 9h and 47min.
On the first day of January, sunrise is at 7:18 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:18 pm EST.

Sunshine

In South Seaville, the average sunshine in January 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 estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 2 in January leads to these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What is the coldest month in South Seaville?

South Seaville's coldest temperatures are experienced in January, with average high temperatures of 40.1°F (4.5°C) and lows of 31.3°F (-0.4°C).

Is it cold in South Seaville during January?

The high-temperature, in January, in South Seaville, is 40.1°F (4.5°C), while the low-temperature averages to 31.3°F (-0.4°C).

What is the average humidity in January in South Seaville?

The average relative humidity in January in South Seaville, New Jersey, is 74%.

What is the driest month in South Seaville?

January is the month with the least rainfall. Rain falls for 7 days and accumulates 0.67" (17mm) of precipitation.

How much does it rain in South Seaville in January?

In South Seaville, in January, it is raining for 7 days, with typically 0.67" (17mm) of accumulated precipitation.

What is the snowiest month in South Seaville?

The month with the most snowfall is January, when snow falls for 4.7 days and typically aggregates up to 0.59" (15mm) of snow.

How much does it snow in South Seaville in January?

In South Seaville, New Jersey, in January, during 4.7 snowfall days, 0.59" (15mm) of snow is typically accumulated.

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

In January, the average day length in South Seaville, New Jersey, is 9h and 47min.

When is the sunrise / sunset in January in South Seaville?

In January, on the first day of the month, sunrise is at 7:18 am and sunset at 4:46 pm. On the last day of the month, in South Seaville, New Jersey, sunrise is at 7:06 am and sunset at 5:18 pm EST.

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

In South Seaville, the average sunshine duration in January is 5.4h.

What is the month with the lowest UV index in South Seaville?

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

How high is the UV index in January in South Seaville?

In South Seaville, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
46°F 7.8°C
40.1°F 4.5°C
42.1°F 5.6°C
Average low temperature
37.9°F 3.3°C
31.3°F -0.4°C
32.7°F 0.4°C
Average pressure
30.09" 764mmHg
30.08" 764mmHg
30.06" 764mmHg
Average wind speed
11.4mph 18.3km/h
11.9mph 19.2km/h
11.7mph 18.8km/h
Average max. wind speed
12.2mph 19.6km/h
12.7mph 20.4km/h
12.4mph 20km/h
Average wind speed gusts
17.8mph 28.6km/h
18.5mph 29.8km/h
19mph 30.6km/h
Average humidity
76%
74%
75%
Average rainfall
1.06" 27mm
0.67" 17mm
0.79" 20mm
Average rainfall days
9.8
7
7.4
Average snowfall
0.47" 12mm
0.59" 15mm
0.31" 8mm
Average snowfall days
2.5
4.7
3.4
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
5h 1min
5h 2min
5h 0min
Average sunshine days
18.1
19.6
17.5
Average UV index
2
2
2
Average cloud cover
44%
42%
45%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
South Seaville, NJ

Average temperature in January - South Seaville, NJ
  • Average high temperature in January: 40.1°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in January: 31.3°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).

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Average pressure in January
South Seaville, NJ

Average pressure in January - South Seaville, NJ
  • Average pressure in January: 30.08"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).

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Average wind speed in January
South Seaville, NJ

Average wind speed in January - South Seaville, NJ
  • Average wind speed in January: 11.9mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).

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Average humidity in January
South Seaville, NJ

Average humidity in January - South Seaville, 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%).

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Average rainfall in January
South Seaville, NJ

Average rainfall in January - South Seaville, NJ
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in January
South Seaville, NJ

Average rainfall days in January - South Seaville, NJ
  • Average rainfall days in January: 7 days

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (7 days).

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Average snowfall in January
South Seaville, NJ

Average snowfall in January - South Seaville, NJ
  • Average snowfall in January: 0.59"

The month with the highest snowfall is January (0.59").
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
South Seaville, NJ

Average snowfall days in January - South Seaville, NJ
  • Average snowfall days in January: 4.7 days

The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - South Seaville, NJ
  • Average daylight in January: 9h and 5min

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 30min).

  • Average sunshine in January: 5h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in January
South Seaville, NJ

Average sunshine days in January - South Seaville, NJ
  • Average sunshine days in January: 19.6 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (13.4 days).

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Average UV index in January
South Seaville, NJ

Average UV index in January - South Seaville, 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 and December (UV index 2).

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Average cloud cover in January
South Seaville, NJ

Average cloud cover in January - South Seaville, NJ
  • Average cloud cover in January: 42

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in January
South Seaville, NJ

Average visibility in January - South Seaville, 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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South Seaville, New Jersey, USA

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