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
January, recording an average high temperature of 37.9°F (3.3°C) and a low temperature of 30°F (-1.1°C), is Islip Terrace's coldest month.Humidity
In January, the average relative humidity in Islip Terrace 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
January through March, October through December are months with snowfall. In Islip Terrace, during January, snow falls for 3.8 days and regularly aggregates up to 1.22" (31mm) of snow. Throughout the year, there are 13 snowfall days, and 5.87" (149mm) of snow is accumulated.Daylight
In Islip Terrace, the average length of the day in January is 9h and 39min.On the first day of January, 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.
Sunshine
In January, the average sunshine is 5.2h.UV index
The months with the lowest UV index in Islip Terrace are January through March and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 2 in January translates into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Islip Terrace?
How cold is January in Islip Terrace?
What is the average humidity in January in Islip Terrace?
What is the driest month in Islip Terrace?
How much does it rain in Islip Terrace in January?
How much does it snow in Islip Terrace in January?
What is the average length of the day in January in Islip Terrace?
What time are sunrise and sunset in January in Islip Terrace?
How many hours of sunshine does Islip Terrace have in January?
What are the months with the lowest UV index in Islip Terrace?
What is the UV index intensity in January in Islip Terrace?
Average temperature in January
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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
Islip Terrace, 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).
Islip Terrace, New York, USA
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