January weather forecast
East Islip, NY

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Weather in January

January, the same as December, is another cold winter month in East Islip, New York, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 37.9°F (3.3°C).

Temperature

With its high average temperature of 37.9°F (3.3°C) and a low of 30°F (-1.1°C), January is regarded as the coldest month.

Humidity

In January, the average relative humidity is 72%.

Rainfall

January is the month with the least rainfall. Rain falls for 7.6 days and accumulates 2.05" (52mm) of precipitation.

Snowfall

Months with snowfall are January through March, October through December. In East Islip, New York, during January, snow falls for 3.8 days and regularly aggregates up to 1.22" (31mm) of snow. In East Islip, during the entire year, snow falls for 13 days and aggregates up to 5.87" (149mm) of snow.

Daylight

In East Islip, the average length of the day in January is 9h and 39min.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:35 pm. On the last day of January, in East Islip, New York, sunrise is at 7:03 am and sunset at 5:08 pm EST.

Sunshine

In January, the average sunshine in East Islip is 5.2h.

UV index

The months with the lowest UV index in East Islip, New York, 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 unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 2 during January translates into these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the coldest month in East Islip?

January, with an average high of 37.9°F (3.3°C) and a low of 30°F (-1.1°C), signifies the coldest month of the year in East Islip, New York.

How cold is it in East Islip in January?

East Islip in January has an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 30°F (-1.1°C).

What is the average humidity in January in East Islip?

In East Islip, New York, the average relative humidity in January is 72%.

What is the driest month in East Islip?

January is the month with the least rainfall in East Islip, New York. Rain falls for 7.6 days and accumulates 2.05" (52mm) of precipitation.

How many days does it rain in January in East Islip?

In East Islip, New York, in January, during 7.6 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

How many days does it snow in January in East Islip?

In East Islip, New York, in January, snow falls for 3.8 days, with typically accumulated 1.22" (31mm) of snow.

What is the average length of the day in January in East Islip?

In January, the average day length in East Islip is 9h and 39min.

What time are sunrise and sunset in January in East Islip?

On the first day of January in East Islip, sunrise is at 7:16 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:08 pm EST.

How many hours of sunshine does East Islip have in January?

The average sunshine duration in January in East Islip, New York, is 5.2h.

What are the months with the lowest UV index in East Islip?

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

What is the UV index reading in January in East Islip?

The average daily maximum UV index in January in East Islip, New York, is 2. A UV Index value of 2, and less, symbolizes a low health risk from 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
East Islip, NY

Average temperature in January - East Islip, NY
  • Average high temperature in January: 37.9°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in January: 30°F

The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (30°F).

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Average pressure in January
East Islip, NY

Average pressure in January - East Islip, NY
  • Average pressure in January: 30.05"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
East Islip, NY

Average wind speed in January - East Islip, NY
  • Average wind speed in January: 13.4mph

The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).

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Average humidity in January
East Islip, NY

Average humidity in January - East Islip, NY
  • Average humidity in January: 72%

The months with the highest relative humidity are May and June (77%).
The month with the lowest relative humidity is November (71%).

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Average rainfall in January
East Islip, NY

Average rainfall in January - East Islip, NY
  • Average rainfall in January: 2.05"

The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in January
East Islip, NY

Average rainfall days in January - East Islip, NY
  • Average rainfall days in January: 7.6 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in January
East Islip, NY

Average snowfall in January - East Islip, NY
  • Average snowfall in January: 1.22"

The month with the highest snowfall is March (1.97").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in January
East Islip, NY

Average snowfall days in January - East Islip, NY
  • Average snowfall days in January: 3.8 days

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

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Average daylight in January /
Average sunshine in January
East Islip, NY

Average daylight in January / Average sunshine in January - East Islip, NY
  • 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 18min).

  • Average sunshine in January: 5h and 1min

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

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Average sunshine days in January
East Islip, NY

Average sunshine days in January - East Islip, NY
  • Average sunshine days in January: 19.4 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.2 days).

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Average UV index in January
East Islip, NY

Average UV index in January - East Islip, 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).

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Average cloud cover in January
East Islip, NY

Average cloud cover in January - East Islip, NY
  • Average cloud cover in January: 44

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in January
East Islip, NY

Average visibility in January - East Islip, NY
  • 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).

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East Islip, New York, USA

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