January weather forecast and climate
Hammonton, NJ

Weather in January

January, the same as December, is a wintry winter month in Hammonton, New Jersey, with average temperature fluctuating between 39°F (3.9°C) and 27.5°F (-2.5°C).

Temperature

The coldest month is January, with an average high-temperature of 39°F (3.9°C) and an average low-temperature of 27.5°F (-2.5°C).

Humidity

In Hammonton, New Jersey, the average relative humidity is 74%.

Rainfall

January is the month with the least rainfall. Rain falls for 6.8 days and accumulates 0.67" (17mm) of precipitation.

Snowfall

January through March, May, November and December are months with snowfall. The month with the most snowfall is January when snow falls for 3.7 days and typically aggregates up to 1.06" (27mm) of snow.

Daylight

The average length of the day in January is 9.7h.

Sunshine

In Hammonton, the average sunshine is 5.2h.

UV index

January, February, 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 rays for the average person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Hammonton?

The coldest month in Hammonton, New Jersey, is January, with an average high-temperature of 39°F (3.9°C) and an average low-temperature of 27.5°F (-2.5°C).

What is the temperature in January in Hammonton?

In Hammonton, in January, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 27.5°F (-2.5°C).

What is the average humidity in January in Hammonton?

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

How many days does it rain in January in Hammonton?

In Hammonton, in January, it is raining for 6.8 days, with typically 0.67" (17mm) of accumulated precipitation.

What is the driest month in Hammonton?

The month with the least rainfall is January when the rain falls for 6.8 days and typically collects 0.67" (17mm) of precipitation.

How many days does it snow in January in Hammonton?

In January, in Hammonton, New Jersey, it is snowing for 3.7 days. Throughout January, 1.06" (27mm) of snow is accumulated.

What is the snowiest month in Hammonton?

The month with the most snowfall is January when snow falls for 3.7 days and typically aggregates up to 1.06" (27mm) of snow.

What is the average length of the day in January in Hammonton?

In January, the average length of the day is 9.7h.

How many hours of sunshine does Hammonton have in January?

In January, the average sunshine is 5.2h.

When is the lowest UV index in Hammonton?

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

How high is the UV index in January in Hammonton?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to the UV radiation.

Average temperature in January
Hammonton, NJ

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

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in January: 27.5°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

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Average pressure in January
Hammonton, NJ

Average pressure in January - Hammonton, NJ
  • Average pressure in January: 30.08"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in January
Hammonton, NJ

Average wind speed in January - Hammonton, NJ
  • Average wind speed in January: 8.9mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in January
Hammonton, NJ

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

The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in January
Hammonton, NJ

Average rainfall in January - Hammonton, NJ
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is July (1.54").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in January
Hammonton, NJ

Average rainfall days in January - Hammonton, NJ
  • Average rainfall days in January: 6.8 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is November (6.7 days).

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Average snowfall in January
Hammonton, NJ

Average snowfall in January - Hammonton, NJ
  • Average snowfall in January: 1.06"

The month with the highest snowfall is January (1.06").
Months with the least snowfall are April, June, July, August, September and October (0").

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Average snowfall days in January
Hammonton, NJ

Average snowfall days in January - Hammonton, NJ
  • Average snowfall days in January: 3.7 days

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

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

Average daylight in January / Average sunshine in January - Hammonton, NJ
  • Average daylight in January: 9.7h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in January: 5.2h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in January
Hammonton, NJ

Average sunshine days in January - Hammonton, NJ
  • Average sunshine days in January: 20.8 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is July (14.3 days).

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Average UV index in January
Hammonton, NJ

Average UV index in January - Hammonton, NJ
  • Average UV index in January: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Hammonton, NJ

Average cloud cover in January - Hammonton, NJ
  • Average cloud cover in January: 43

Months with the most cloud cover are February and March (Cloud cover 46).
Months with the least cloud cover are July and August (Cloud cover 29).

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Average visibility in January
Hammonton, NJ

Average visibility in January - Hammonton, 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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