January weather forecast
Succasunna, NJ

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Weather in January

January, like December, in Succasunna, New Jersey, is an icy winter month, with an average temperature fluctuating between 20.8°F (-6.2°C) and 34.3°F (1.3°C).

Temperature

Succasunna notes the coldest temperatures in January, with a high average of 34.3°F (1.3°C) and a low of 20.8°F (-6.2°C).

Humidity

In January, the average relative humidity is 78%.

Rainfall

In January, the rain falls for 4.2 days. Throughout January, 0.43" (11mm) of precipitation is accumulated. Throughout the year, there are 81.9 rainfall days, and 6.69" (170mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Succasunna, New Jersey. In January, it is snowing for 4.5 days. Throughout January, 0.51" (13mm) of snow is accumulated. Throughout the year, there are 18.1 snowfall days, and 2.68" (68mm) of snow is accumulated.

Daylight

In Succasunna, the average length of the day in January is 9h and 38min.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:14 pm EST.

Sunshine

In January, the average sunshine is 4.8h.

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 unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 2 in January transforms into this advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Boost your sun resistance with garments that are densely woven yet spacious. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.

Frequently asked questions

What are the coldest months?

January, with its average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 20.8°F (-6.2°C), holds the record as the coldest month.

How cold is it in January?

January temperatures in Succasunna vary between a high-temperature of 34.3°F (1.3°C) and a low-temperature of 20.8°F (-6.2°C).

What is the average humidity in January?

In Succasunna, New Jersey, the average relative humidity in January is 78%.

How many days does it rain in January?

In Succasunna, during January, the rain falls for 4.2 days and regularly aggregates up to 0.43" (11mm) of precipitation.

How much does it snow in January?

In Succasunna, in January, snow falls for 4.5 days, with typically accumulated 0.51" (13mm) of snow.

What is the average length of the day in January?

In January, the average day length is 9h and 38min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:22 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:14 pm EST.

How many hours of sunshine does Succasunna have in January?

In Succasunna, the average sunshine duration in January is 4.8h.

What are the months with the lowest UV index?

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 January, the average daily maximum UV index in Succasunna is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Succasunna, NJ

Average temperature in January - Succasunna, NJ
  • Average high temperature in January: 34.3°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in January: 20.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average pressure in January
Succasunna, NJ

Average pressure in January - Succasunna, 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).

Average wind speed in January
Succasunna, NJ

Average wind speed in January - Succasunna, NJ
  • Average wind speed in January: 8.1mph

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in January
Succasunna, NJ

Average humidity in January - Succasunna, NJ
  • Average humidity in January: 78%

The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (75%).

Average rainfall in January
Succasunna, NJ

Average rainfall in January - Succasunna, NJ
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is July (0.79").
The driest month (with the least rainfall) is September (0.16").

Average rainfall days in January
Succasunna, NJ

Average rainfall days in January - Succasunna, NJ
  • Average rainfall days in January: 4.2 days

The month with the highest number of rainy days is July (9.5 days).
The month with the least rainy days is February (4 days).

Average snowfall in January
Succasunna, NJ

Average snowfall in January - Succasunna, NJ
  • Average snowfall in January: 0.51"

The month with the highest snowfall is March (0.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Succasunna, NJ

Average snowfall days in January - Succasunna, NJ
  • Average snowfall days in January: 4.5 days

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Succasunna, NJ
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in January
Succasunna, NJ

Average sunshine days in January - Succasunna, NJ
  • Average sunshine days in January: 24.3 days

The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (18.3 days).

Average UV index in January
Succasunna, NJ

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January
Succasunna, NJ

Average cloud cover in January - Succasunna, NJ
  • Average cloud cover in January: 48

The months with the most cloud cover are February and March (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in January
Succasunna, NJ

Average visibility in January - Succasunna, NJ
  • Average visibility in January: 6mi

The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).

Succasunna, New Jersey, USA

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