January weather forecastMount Sinai, NY
January
Weather in January
January, the same as December, is an icy winter month in Mount Sinai, New York, with temperature in the range of an average low of 29.1°F (-1.6°C) and an average high of 37.6°F (3.1°C).Temperature
January is the coldest month, exhibiting average temperatures of 37.6°F (3.1°C) at the peak and 29.1°F (-1.6°C) at the base.Humidity
In January, the average relative humidity in Mount Sinai is 72%.Rainfall
The month with the least rainfall is January, when the rain falls for 6.8 days and typically collects 2.05" (52mm) of precipitation.Snowfall
Months with snowfall are January through March, October through December. In Mount Sinai, in January, during 3.5 snowfall days, 0.94" (24mm) of snow is typically accumulated. In Mount Sinai, during the entire year, snow falls for 12.6 days and aggregates up to 5.59" (142mm) of snow.Ocean temperature
In January, the average ocean temperature in Mount Sinai is 42.3°F (5.7°C).Note: It is life-risking to swim in 42.3°F (5.7°C). Briefly staying in 55.4°F (13°C) waters feels unsettling, and temperatures below 50°F (10°C) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
The average length of the day in January in Mount Sinai is 9h and 38min.On the first day of January, sunrise is at 7:16 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:07 pm EST.
Sunshine
The average sunshine in January is 5.1h.UV index
The months with the lowest UV index in Mount Sinai are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during January translates into the following guidance:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Mount Sinai, NY
- Average high temperature in January: 37.6°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in January: 29.1°F
The months with the highest average low temperature are July and August (71.1°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in January
Mount Sinai, 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 (29.93"Hg).
Average wind speed in January
Mount Sinai, NY
- Average wind speed in January: 12.9mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in January
Mount Sinai, 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
Mount Sinai, NY
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in January
Mount Sinai, NY
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in January
Mount Sinai, NY
- Average snowfall in January: 0.94"
The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in January
Mount Sinai, NY
- Average snowfall days in January: 3.5 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in January
Mount Sinai, NY
- Average sea temperature in January: 42.3°F
The best month for swimming (with the highest average sea temperature) is August (74°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).
Average daylight in January /
Average sunshine in January
Mount Sinai, NY
- Average daylight in January: 9h and 36min
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: 5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Mount Sinai, NY
- Average sunshine days in January: 19.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (13 days).
Average UV index in January
Mount Sinai, 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, November and December (UV index 2).
Average cloud cover in January
Mount Sinai, NY
- Average cloud cover in January: 45
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Mount Sinai, 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).





