January weather forecast
Keyport, NJ

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Weather in January

January, like December, in Keyport, New Jersey, is a wintry winter month, with an average temperature fluctuating between 37°F (2.8°C) and 26.4°F (-3.1°C).

Temperature

Keyport notes the coldest temperatures in January, with a high average of 37°F (2.8°C) and a low of 26.4°F (-3.1°C).

Humidity

The average relative humidity in January in Keyport is 74%.

Rainfall

January is the month with the least rainfall. Rain falls for 8.2 days and accumulates 1.61" (41mm) of precipitation.

Snowfall

Months with snowfall in Keyport, New Jersey, are January through April, November and December. In Keyport, New Jersey, in January, snow falls for 5 days, with typically accumulated 1.34" (34mm) of snow. Throughout the year, there are 16.9 snowfall days, and 6.34" (161mm) of snow is accumulated.

Ocean temperature

In Keyport, in January, the average water temperature is 42.4°F (5.8°C).
Note: Beware of 42.4°F (5.8°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.

Daylight

In Keyport, the average length of the day in January is 9h and 41min.
On the first day of January, sunrise is at 7:19 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:13 pm EST.

Sunshine

The average sunshine in January in Keyport is 5.2h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 2 in January leads to these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the coldest month in Keyport?

In Keyport, New Jersey, the average lowest temperatures are observed in January, with a high of 37°F (2.8°C) and a low of 26.4°F (-3.1°C).

How cold is January in Keyport?

During January, Keyport experiences an average high-temperature of 37°F (2.8°C) and a low-temperature of 26.4°F (-3.1°C).

What is the average humidity in January in Keyport?

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

What is the driest month in Keyport?

January is the month with the least rainfall in Keyport. Rain falls for 8.2 days and accumulates 1.61" (41mm) of precipitation.

How much does it rain in Keyport in January?

In January, the rain falls for 8.2 days. Throughout January, 1.61" (41mm) of precipitation is accumulated.

How much does it snow in Keyport in January?

In Keyport, in January, snow falls for 5 days, with typically accumulated 1.34" (34mm) of snow.

How cold is the water in January in Keyport?

In Keyport, the average seawater temperature in January 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.

How many hours of daylight does Keyport have in January?

In January, the average day length in Keyport, New Jersey, is 9h and 41min.

When is the sunrise / sunset in January in Keyport?

On the first day of January, sunrise is at 7:19 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:13 pm EST.

How long on average sun shines in January in Keyport?

In Keyport, New Jersey, the average sunshine duration in January is 5.2h.

What are the months with the lowest UV index in Keyport?

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

How high is the UV index in January in Keyport?

The average daily maximum UV index in January in Keyport is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
43.5°F 6.4°C
37°F 2.8°C
39.9°F 4.4°C
Average low temperature
34.2°F 1.2°C
26.4°F -3.1°C
28.2°F -2.1°C
Average pressure
30.08" 764mmHg
30.07" 764mmHg
30.04" 763mmHg
Average wind speed
9.8mph 15.8km/h
10.4mph 16.7km/h
10.2mph 16.4km/h
Average max. wind speed
10.6mph 17.1km/h
11.1mph 17.9km/h
10.9mph 17.5km/h
Average wind speed gusts
15.1mph 24.3km/h
15.9mph 25.6km/h
16.2mph 26.1km/h
Average humidity
76%
74%
76%
Average rainfall
2.8" 71mm
1.61" 41mm
1.73" 44mm
Average rainfall days
10.7
8.2
9
Average snowfall
0.83" 21mm
1.34" 34mm
1.34" 34mm
Average snowfall days
3.1
5
4.3
Average sea temperature
48.1°F 8.9°C
42.4°F 5.8°C
40.4°F 4.7°C
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
5h 0min
5h 1min
4h 5min
Average sunshine days
17.5
18.7
15.3
Average UV index
2
2
2
Average cloud cover
47%
44%
47%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Keyport, NJ

Average temperature in January - Keyport, NJ
  • Average high temperature in January: 37°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in January: 26.4°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 (26.4°F).

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Average pressure in January
Keyport, NJ

Average pressure in January - Keyport, 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).

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Average wind speed in January
Keyport, NJ

Average wind speed in January - Keyport, NJ
  • Average wind speed in January: 10.4mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in January
Keyport, NJ

Average humidity in January - Keyport, NJ
  • Average humidity in January: 74%

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

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Average rainfall in January
Keyport, NJ

Average rainfall in January - Keyport, NJ
  • Average rainfall in January: 1.61"

The wettest month (with the highest rainfall) is July (3.43").
The driest month (with the least rainfall) is January (1.61").

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Average rainfall days in January
Keyport, NJ

Average rainfall days in January - Keyport, NJ
  • Average rainfall days in January: 8.2 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in January
Keyport, NJ

Average snowfall in January - Keyport, NJ
  • Average snowfall in January: 1.34"

The month with the highest snowfall is March (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Keyport, NJ

Average snowfall days in January - Keyport, NJ
  • Average snowfall days in January: 5 days

The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in January
Keyport, NJ

Average sea temperature in January - Keyport, NJ
  • Average sea temperature in January: 42.4°F

The best month for swimming (with the highest average sea temperature) is August (74.8°F).
The coldest month (with the lowest average sea temperature) is February (40.4°F).

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Average daylight in January /
Average sunshine in January
Keyport, NJ

Average daylight in January / Average sunshine in January - Keyport, 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 48min).

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Average sunshine days in January
Keyport, NJ

Average sunshine days in January - Keyport, NJ
  • Average sunshine days in January: 18.7 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (11.5 days).

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Average UV index in January
Keyport, NJ

Average UV index in January - Keyport, 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).

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Average cloud cover in January
Keyport, NJ

Average cloud cover in January - Keyport, NJ
  • Average cloud cover in January: 44

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 30).

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Average visibility in January
Keyport, NJ

Average visibility in January - Keyport, 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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Keyport, New Jersey, USA

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