Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
In East Islip, the month of January is known for its lowest average temperatures, reaching a high of 37.9°F (3.3°C) and a low of 30°F (-1.1°C).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 January, it is snowing for 3.8 days. Throughout January, 1.22" (31mm) of snow is accumulated. Throughout the year, there are 13 snowfall days, and 5.87" (149mm) of snow is accumulated.Daylight
In January, the average length of the day 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, sunrise is at 7:03 am and sunset at 5:08 pm EST.
Sunshine
In January, the average sunshine is 5.2h.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 of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 2 in January translates into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold does it get in January?
What is the average humidity in January?
What is the driest month in East Islip?
How many days does it rain in January?
How much does it snow in January?
How many hours of daylight does East Islip have in January?
When are sunrise and sunset in January?
How many hours of sunshine does East Islip have in January?
When is the lowest UV index?
What is the UV index reading in January?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
East Islip, New York, USA
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