January weather forecast
Shelter Island, NY

January

Weather in January

January, like December, in Shelter Island, New York, is another cold winter month, with an average temperature ranging between min -0.4°C and max 3.8°C.

Temperature

January, recording an average high temperature of 3.8°C and a low temperature of -0.4°C, is Shelter Island's coldest month.

Humidity

In Shelter Island, the average relative humidity in January is 73%.

Rainfall

In January, in Shelter Island, the rain falls for 9.1 days. Throughout January, 65mm of precipitation is accumulated. Throughout the year, in Shelter Island, there are 154.1 rainfall days, and 887mm of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Shelter Island, New York. In January, in Shelter Island, New York, it is snowing for 4.2 days. Throughout January, 47mm of snow is accumulated. Throughout the year, in Shelter Island, New York, there are 13.9 snowfall days, and 168mm of snow is accumulated.

Daylight

In January, the average length of the day in Shelter Island is 9h and 37min.
On the first day of January, sunrise is at 7:14 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:04 pm EST.

Sunshine

In January, the average sunshine in Shelter Island, New York, is 4.9h.

UV index

The months with the lowest UV index are January through March and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Shelter Island?
The month of January, characterized by an average high of 3.8°C and a low of -0.4°C, is recognized as the coldest.
Is January cold in Shelter Island?
The average high-temperature and low-temperature during January are 3.8°C and -0.4°C respectively.
What is the average humidity in January in Shelter Island?
The average relative humidity in January in Shelter Island is 73%.
How many days does it rain in January in Shelter Island?
In Shelter Island, New York, during January, the rain falls for 9.1 days and regularly aggregates up to 65mm of precipitation.
How much does it snow in Shelter Island in January?
In January, in Shelter Island, it is snowing for 4.2 days. Throughout January, 47mm of snow is accumulated.
What is the average length of the day in January in Shelter Island?
The average day length in January is 9h and 37min.
What time are sunrise and sunset in January in Shelter Island?
On the first day of January, sunrise is at 7:14 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:04 pm EST.
How many hours of sunshine does Shelter Island have in January?
The average sunshine duration in January in Shelter Island, New York, is 4.9h.
What is the month with the lowest UV index in Shelter Island?
The months with the lowest UV index in Shelter Island, New York, are January through March and December, with an average maximum UV index of 2.
What is the UV index intensity in January in Shelter Island?
In Shelter Island, New York, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January - Shelter Island, NY
Average temperature in January
Shelter Island, NY
  • Average high temperature in January: 3.8°C

The warmest month (with the highest average high temperature) is August (24.4°C).
The month with the lowest average high temperature is January (3.8°C).

  • Average low temperature in January: -0.4°C

The month with the highest average low temperature is August (21.8°C).
The coldest month (with the lowest average low temperature) is January (-0.4°C).

Average pressure in January - Shelter Island, NY
Average pressure in January
Shelter Island, NY
  • Average pressure in January: 1017mbar

The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in January - Shelter Island, NY
Average wind speed in January
Shelter Island, NY
  • Average wind speed in January: 25.7km/h

The windiest month (with the highest average wind speed) is January (25.7km/h).
The calmest month (with the lowest average wind speed) is July (16.8km/h).

Average humidity in January - Shelter Island, NY
Average humidity in January
Shelter Island, NY
  • Average humidity in January: 73%

The months with the highest relative humidity are May and June (81%).
The month with the lowest relative humidity is November (72%).

Average rainfall in January - Shelter Island, NY
Average rainfall in January
Shelter Island, NY
  • Average rainfall in January: 65mm

The wettest month (with the highest rainfall) is December (97mm).
The driest month (with the least rainfall) is September (55mm).

Average rainfall days in January - Shelter Island, NY
Average rainfall days in January
Shelter Island, NY
  • Average rainfall days in January: 9.1 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in January - Shelter Island, NY
Average snowfall in January
Shelter Island, NY
  • Average snowfall in January: 47mm

The month with the highest snowfall is March (60mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in January - Shelter Island, NY
Average snowfall days in January
Shelter Island, NY
  • Average snowfall days in January: 4.2 days

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January / Average sunshine in January - Shelter Island, NY
Average daylight in January /
Average sunshine in January
Shelter Island, NY
  • 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 months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days in January - Shelter Island, NY
Average sunshine days in January
Shelter Island, NY
  • Average sunshine days in January: 15.3 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is February (12.8 days).

Average UV index in January - Shelter Island, NY
Average UV index in January
Shelter Island, NY
  • Average UV index in January: 2

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

Average cloud cover in January - Shelter Island, NY
Average cloud cover in January
Shelter Island, NY
  • Average cloud cover in January: 48

The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in January - Shelter Island, NY
Average visibility in January
Shelter Island, NY
  • Average visibility in January: 9km

The months with the highest visibility are June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March, April, May and December (9km).

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