January weather forecast
Windsor, NJ

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Weather in January

January, like December, in Windsor, New Jersey, is a wintry winter month, with an average temperature fluctuating between 37.4°F (3°C) and 25°F (-3.9°C).

Temperature

January is the coldest month of the year, registering average temperatures as high as 37.4°F (3°C) and as low as 25°F (-3.9°C).

Humidity

In January, the average relative humidity is 75%.

Rainfall

In Windsor, in January, it is raining for 8.3 days, with typically 1.73" (44mm) of accumulated precipitation. In Windsor, during the entire year, the rain falls for 152.9 days and collects up to 28.78" (731mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In Windsor, in January, snow falls for 5.3 days, with typically accumulated 1.89" (48mm) of snow. Throughout the year, there are 17.7 snowfall days, and 8.43" (214mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 41min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:42 pm. On the last day of January, sunrise is at 7:08 am and sunset at 5:15 pm EST.

Sunshine

In January, the average sunshine is 5.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, a daily UV index of 2 turns into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

The coldest month is January, with an average high-temperature of 37.4°F (3°C) and an average low-temperature of 25°F (-3.9°C).

How cold is January?

During January, Windsor experiences an average high-temperature of 37.4°F (3°C) and a low-temperature of 25°F (-3.9°C).

What is the average humidity in January in Windsor?

In Windsor, New Jersey, the average relative humidity in January is 75%.

How much does it rain in January?

In Windsor, in January, it is raining for 8.3 days, with typically 1.73" (44mm) of accumulated precipitation.

How much does it snow in January?

In Windsor, during January, snow falls for 5.3 days and regularly aggregates up to 1.89" (48mm) of snow.

How many hours of daylight does Windsor have in January?

In Windsor, the average day length in January is 9h and 41min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:20 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:15 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 5.1h.

When is the lowest UV index?

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

How high is the UV index in January?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Windsor, NJ

Average temperature in January - Windsor, NJ
  • Average high temperature in January: 37.4°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in January: 25°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in January
Windsor, NJ

Average pressure in January - Windsor, 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
Windsor, NJ

Average wind speed in January - Windsor, NJ
  • Average wind speed in January: 8.5mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in January
Windsor, NJ

Average humidity in January - Windsor, NJ
  • Average humidity in January: 75%

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in January
Windsor, NJ

Average rainfall in January - Windsor, NJ
  • Average rainfall in January: 1.73"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in January
Windsor, NJ

Average rainfall days in January - Windsor, NJ
  • Average rainfall days in January: 8.3 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in January
Windsor, NJ

Average snowfall in January - Windsor, NJ
  • Average snowfall in January: 1.89"

The month with the highest snowfall is March (3.11").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in January
Windsor, NJ

Average snowfall days in January - Windsor, NJ
  • Average snowfall days in January: 5.3 days

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

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

Average daylight in January / Average sunshine in January - Windsor, 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 24min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in January
Windsor, NJ

Average sunshine days in January - Windsor, NJ
  • Average sunshine days in January: 19.1 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11 days).

Average UV index in January
Windsor, NJ

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

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

Average cloud cover in January
Windsor, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
Windsor, NJ

Average visibility in January - Windsor, 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).

Windsor, New Jersey, USA

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