January weather forecast
Keyport, NJ

Weather in January

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

Temperature

January is the coldest month, with an average high-temperature of 37°F (2.8°C) and an average low-temperature of 26.4°F (-3.1°C).

Humidity

In January, the average relative humidity 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 are January through April, November and December. In January, it is snowing for 5 days. Throughout January, 1.34" (34mm) of snow is accumulated. In Keyport, New Jersey, during the entire year, snow falls for 16.9 days, and aggregates up to 6.34" (161mm) of snow.

Ocean temperature

In Keyport, the average seawater temperature in January is 42.4°F (5.8°C).
Note: Swimming in 42.4°F (5.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In January, the average length of the day in Keyport, New Jersey, is 9.7h.

Sunshine

In January, the average sunshine is 5.2h.

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 estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Keyport?

With an average high-temperature of 37°F (2.8°C) and an average low-temperature of 26.4°F (-3.1°C), January is the coldest month.

What is the average humidity in January in Keyport?

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

What is the driest month in Keyport?

The month with the least rainfall in Keyport, New Jersey, is January when the rain falls for 8.2 days and typically collects 1.61" (41mm) of precipitation.

How much does it rain in Keyport in January?

In Keyport, New Jersey, during January, the rain falls for 8.2 days and regularly aggregates up to 1.61" (41mm) of precipitation.

How much does it snow in Keyport in January?

In January, in Keyport, it is snowing for 5 days. Throughout January, 1.34" (34mm) of snow is accumulated.

What is the ocean temperature in January in Keyport?

In January, the average ocean temperature in Keyport is 42.4°F (5.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Keyport have in January?

In Keyport, New Jersey, the average length of the day in January is 9.7h.

How many hours of sunshine does Keyport have in January?

In January, the average sunshine is 5.2h.

What is the month with the lowest UV index in Keyport?

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

What is the UV index intensity in January in Keyport?

In January, the average daily maximum UV index in Keyport is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.

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"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

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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%

Months with the highest relative humidity are May and June (77%).
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").
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).
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: 9.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 5.2h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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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

Months with the highest UV index are June, July and August (UV index 6).
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

Months with the most cloud cover are February, March and December (Cloud cover 47).
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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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