January weather forecastNassau, NY
January
Weather in January
January, like December, is another subzero cold winter month in Nassau, New York, with an average temperature varying between 28.9°F (-1.7°C) and 16.5°F (-8.6°C).Temperature
Nassau's temperature records reveal January as the coldest month, marked by average highs of 28.9°F (-1.7°C) and lows of 16.5°F (-8.6°C).Humidity
The average relative humidity in January in Nassau is 81%.Rainfall
The month with the least rainfall is January, when the rain falls for 7.3 days and typically collects 1.61" (41mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Nassau, New York, in January, during 10.8 snowfall days, 4.09" (104mm) of snow is typically accumulated. Throughout the year, there are 41.1 snowfall days, and 18.9" (480mm) of snow is accumulated.Daylight
In Nassau, New York, the average length of the day in January is 9h and 29min.On the first day of the month, sunrise is at 7:24 am and sunset at 4:31 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:06 pm EST.
Sunshine
In January, the average sunshine is 4.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, a daily UV index of 1 turns into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Nassau, NY
- Average high temperature in January: 28.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in January: 16.5°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in January
Nassau, NY
- Average pressure in January: 30.04"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Nassau, NY
- Average wind speed in January: 8.3mph
The windiest months (with the highest average wind speed) are January, February and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in January
Nassau, NY
- Average humidity in January: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in January
Nassau, NY
- Average rainfall in January: 1.61"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in January
Nassau, NY
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in January
Nassau, NY
- Average snowfall in January: 4.09"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Nassau, NY
- Average snowfall days in January: 10.8 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Nassau, NY
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 4h and 12min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in January
Nassau, NY
- Average sunshine days in January: 16.8 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in January
Nassau, NY
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Nassau, NY
- Average cloud cover in January: 56
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in January
Nassau, NY
- Average visibility in January: 5mi
The months with the highest visibility are April, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September and October (5mi).
