January weather forecast
Flanders, NJ

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Weather in January

January, like December, in Flanders, New Jersey, is an icy winter month, with an average temperature ranging between min 21°F (-6.1°C) and max 33.4°F (0.8°C).

Temperature

January is the coldest month, with an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21°F (-6.1°C).

Humidity

In January, the average relative humidity is 78%.

Rainfall

In Flanders, during January, the rain falls for 7.5 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 140.4 rainfall days, and 28.46" (723mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Flanders are January through May, October through December. In Flanders, in January, snow falls for 8.9 days, with typically accumulated 4.92" (125mm) of snow. Throughout the year, in Flanders, there are 34.7 snowfall days, and 20.71" (526mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 38min.
On the first day of January in Flanders, sunrise is at 7:23 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:14 pm EST.

Sunshine

In Flanders, the average sunshine in January is 4.9h.

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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Flanders?

With its average high temperature of 33.4°F (0.8°C) and a low of 21°F (-6.1°C), January is regarded as the coldest month.

How cold is January in Flanders?

The average high-temperature and low-temperature in Flanders, New Jersey, during January are 33.4°F (0.8°C) and 21°F (-6.1°C) respectively.

What is the average humidity in January in Flanders?

In Flanders, the average relative humidity in January is 78%.

How much does it rain in Flanders in January?

In January, in Flanders, New Jersey, the rain falls for 7.5 days. Throughout January, 2.24" (57mm) of precipitation is accumulated.

How much does it snow in Flanders in January?

In Flanders, in January, snow falls for 8.9 days, with typically accumulated 4.92" (125mm) of snow.

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

The average day length in January is 9h and 38min.

When is the sunrise / sunset in January in Flanders?

On the first day of January in Flanders, New Jersey, sunrise is at 7:23 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:14 pm EST.

How many hours of sunshine does Flanders have in January?

In January, the average sunshine duration is 4.9h.

When is the lowest UV index in Flanders?

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

What is the UV index intensity in January in Flanders?

In Flanders, New Jersey, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
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
Flanders, NJ

Average temperature in January - Flanders, NJ
  • Average high temperature in January: 33.4°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 (33.4°F).

  • Average low temperature in January: 21°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in January
Flanders, NJ

Average pressure in January - Flanders, 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
Flanders, NJ

Average wind speed in January - Flanders, NJ
  • Average wind speed in January: 8mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity in January
Flanders, NJ

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

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in January
Flanders, NJ

Average rainfall in January - Flanders, NJ
  • Average rainfall in January: 2.24"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.02").

Average rainfall days in January
Flanders, NJ

Average rainfall days in January - Flanders, NJ
  • Average rainfall days in January: 7.5 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in January
Flanders, NJ

Average snowfall in January - Flanders, NJ
  • Average snowfall in January: 4.92"

The month with the highest snowfall is March (5.24").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Flanders, NJ

Average snowfall days in January - Flanders, NJ
  • Average snowfall days in January: 8.9 days

The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Flanders, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in January
Flanders, NJ

Average sunshine days in January - Flanders, NJ
  • Average sunshine days in January: 16.6 days

The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is April (12.3 days).

Average UV index in January
Flanders, NJ

Average UV index in January - Flanders, 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
Flanders, NJ

Average cloud cover in January - Flanders, NJ
  • Average cloud cover in January: 47

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in January
Flanders, NJ

Average visibility in January - Flanders, NJ
  • Average visibility in January: 5mi

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

Flanders, New Jersey, USA

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