January weather forecast
Port Norris, NJ

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Weather in January

January, the same as December, is a wintry winter month in Port Norris, New Jersey, with an average temperature fluctuating between 39°F (3.9°C) and 28.4°F (-2°C).

Temperature

January is the month when Port Norris sees the lowest average temperatures, with a high of 39°F (3.9°C) and a low of 28.4°F (-2°C).

Humidity

The average relative humidity in January is 74%.

Rainfall

The month with the least rainfall in Port Norris is January, when the rain falls for 7.5 days and typically collects 0.75" (19mm) of precipitation.

Snowfall

Months with snowfall in Port Norris are January through March, November and December. The month with the most snowfall in Port Norris is January, when snow falls for 4 days and typically aggregates up to 1.22" (31mm) of snow.

Daylight

In Port Norris, the average length of the day in January is 9h and 47min.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:47 pm. On the last day of January, in Port Norris, sunrise is at 7:08 am and sunset at 5:19 pm EST.

Sunshine

In Port Norris, the average sunshine in January is 5.3h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 2 in January converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What part of the year is the coldest in Port Norris?

January proves to be the coldest month, recording an average maximum temperature of 39°F (3.9°C) and a minimum temperature of 28.4°F (-2°C).

How cold is it in Port Norris in January?

In January, the average high-temperature and low-temperature are 39°F (3.9°C) and 28.4°F (-2°C) respectively.

What is the average humidity in January in Port Norris?

In January, the average relative humidity is 74%.

What is the driest month in Port Norris?

January is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.75" (19mm) of precipitation.

How many days does it rain in January in Port Norris?

In Port Norris, New Jersey, in January, it is raining for 7.5 days, with typically 0.75" (19mm) of accumulated precipitation.

When does it snow the most in Port Norris?

The month with the most snowfall in Port Norris is January, when snow falls for 4 days and typically aggregates up to 1.22" (31mm) of snow.

How much does it snow in Port Norris in January?

In January, in Port Norris, it is snowing for 4 days. Throughout January, 1.22" (31mm) of snow is accumulated.

What is the average length of the day in January in Port Norris?

In January, the average day length is 9h and 47min.

When is the sunrise / sunset in January in Port Norris?

On the first day of January in Port Norris, sunrise is at 7:19 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:19 pm EST.

How many hours of sunshine does Port Norris have in January?

In January, the average sunshine duration is 5.3h.

What are the months with the lowest UV index in Port Norris?

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

What is the UV index reading in January in Port Norris?

In Port Norris, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45.5°F 7.5°C
39°F 3.9°C
42.3°F 5.7°C
Average low temperature
35.4°F 1.9°C
28.4°F -2°C
30.6°F -0.8°C
Average pressure
30.09" 764mmHg
30.09" 764mmHg
30.06" 764mmHg
Average wind speed
8.8mph 14.2km/h
9.5mph 15.3km/h
9.6mph 15.4km/h
Average max. wind speed
9.6mph 15.4km/h
10.3mph 16.6km/h
10.3mph 16.6km/h
Average wind speed gusts
14.4mph 23.2km/h
15.3mph 24.6km/h
15.6mph 25.1km/h
Average humidity
77%
74%
76%
Average rainfall
1.42" 36mm
0.75" 19mm
1.14" 29mm
Average rainfall days
9.2
7.5
7.7
Average snowfall
0.43" 11mm
1.22" 31mm
0.75" 19mm
Average snowfall days
2.2
4
3.8
Average daylight
9h 3min
9h 5min
10h 4min
Average sunshine
5h 1min
5h 2min
5h 0min
Average sunshine days
20.1
19.9
17
Average UV index
2
2
2
Average cloud cover
45%
43%
46%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Port Norris, NJ

Average temperature in January - Port Norris, NJ
  • Average high temperature in January: 39°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in January: 28.4°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in January
Port Norris, NJ

Average pressure in January - Port Norris, NJ
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Port Norris, NJ

Average wind speed in January - Port Norris, NJ
  • Average wind speed in January: 9.5mph

The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in January
Port Norris, NJ

Average humidity in January - Port Norris, NJ
  • Average humidity in January: 74%

The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in January
Port Norris, NJ

Average rainfall in January - Port Norris, NJ
  • Average rainfall in January: 0.75"

The wettest month (with the highest rainfall) is August (1.81").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in January
Port Norris, NJ

Average rainfall days in January - Port Norris, NJ
  • Average rainfall days in January: 7.5 days

The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is November (7.3 days).

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Average snowfall in January
Port Norris, NJ

Average snowfall in January - Port Norris, NJ
  • Average snowfall in January: 1.22"

The month with the highest snowfall is January (1.22").
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
Port Norris, NJ

Average snowfall days in January - Port Norris, NJ
  • Average snowfall days in January: 4 days

The month with the highest number of snowfall days is January (4 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
Port Norris, NJ

Average daylight in January / Average sunshine in January - Port Norris, 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: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in January
Port Norris, NJ

Average sunshine days in January - Port Norris, NJ
  • Average sunshine days in January: 19.9 days

The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in January
Port Norris, NJ

Average UV index in January - Port Norris, 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).

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Average cloud cover in January
Port Norris, NJ

Average cloud cover in January - Port Norris, NJ
  • Average cloud cover in January: 43

The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in January
Port Norris, NJ

Average visibility in January - Port Norris, 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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Port Norris, New Jersey, USA

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