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 sea temperature 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 is the month when Greenport, New York, sees the lowest average temperatures, with a high of 38.8°F (3.8°C) and a low of 31.3°F (-0.4°C).Humidity
In January, the average relative humidity in Greenport is 73%.Rainfall
In Greenport, in January, during 9.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, in Greenport, there are 154.1 rainfall days, and 34.92" (887mm) of precipitation is accumulated.Snowfall
Months with snowfall in Greenport are January through March, November and December. In Greenport, in January, snow falls for 4.2 days, with typically accumulated 1.85" (47mm) of snow. In Greenport, New York, during the entire year, snow falls for 13.9 days and aggregates up to 6.61" (168mm) of snow.Ocean temperature
In Greenport, New York, in January, the average water temperature is 41.9°F (5.5°C).Note: Diving into 41.9°F (5.5°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
In January, the average length of the day is 9h and 37min.On the first day of the month, sunrise is at 7:14 am and sunset at 4:31 pm. On the last day of January, sunrise is at 7:01 am and sunset at 5:04 pm EST.
Sunshine
In Greenport, the average sunshine in January is 4.9h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Greenport. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In January, a daily UV index of 2 turns into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Greenport?
How cold does it get in Greenport in January?
What is the average humidity in January in Greenport?
How much does it rain in Greenport in January?
How much does it snow in Greenport in January?
How cold is the water in January in Greenport?
How many hours of daylight does Greenport have in January?
What time are sunrise and sunset in January in Greenport?
How long on average sun shines in January in Greenport?
When is the lowest UV index in Greenport?
What is the UV index intensity in January in Greenport?
Average temperature in January
Greenport, NY
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in January: 31.3°F
The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in January
Greenport, NY
- Average pressure in January: 30.03"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Greenport, NY
- Average wind speed in January: 16mph
The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.4mph).
Average humidity in January
Greenport, 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
Greenport, NY
- Average rainfall in January: 2.56"
The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in January
Greenport, 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
Greenport, NY
- Average snowfall in January: 1.85"
The month with the highest snowfall is March (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Greenport, 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 sea temperature in January
Greenport, NY
- Average sea temperature in January: 41.9°F
The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in January /
Average sunshine in January
Greenport, 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
Greenport, 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
Greenport, 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
Greenport, 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
Greenport, 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).
Greenport, New York, USA
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