January weather forecastHewlett Bay Park, NY
January
Weather in January
January, like December, in Hewlett Bay Park, New York, is an icy winter month, with temperature in the range of an average high of 37°F (2.8°C) and an average low of 28.2°F (-2.1°C).Temperature
The lowest temperatures are recorded in January, with averages reaching a high of 37°F (2.8°C) and a low of 28.2°F (-2.1°C).Humidity
The average relative humidity in January is 73%.Rainfall
January is the month with the least rainfall in Hewlett Bay Park. Rain falls for 7.3 days and accumulates 0.91" (23mm) of precipitation.Snowfall
January through March, October through December are months with snowfall. In Hewlett Bay Park, during January, snow falls for 4.6 days and regularly aggregates up to 0.67" (17mm) of snow. In Hewlett Bay Park, during the entire year, snow falls for 15.8 days and aggregates up to 2.95" (75mm) of snow.Ocean temperature
In Hewlett Bay Park, the average seawater temperature in January is 42.4°F (5.8°C).Note: If planning to swim in 42.4°F (5.8°C) under 50°F (10°C), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 55.4°F (13°C) is not much warmer.
Daylight
In Hewlett Bay Park, the average length of the day in January is 9h and 40min.On the first day of January, sunrise is at 7:18 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:10 pm EST.
Sunshine
In January, the average sunshine is 5.1h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 2 during January translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Hewlett Bay Park, NY
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in January: 28.2°F
The month with the highest average low temperature is August (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in January
Hewlett Bay Park, NY
- Average pressure in January: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Hewlett Bay Park, NY
- Average wind speed in January: 12.4mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in January
Hewlett Bay Park, NY
- Average humidity in January: 73%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).
Average rainfall in January
Hewlett Bay Park, NY
- Average rainfall in January: 0.91"
The wettest months (with the highest rainfall) are July and August (2.32").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in January
Hewlett Bay Park, NY
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in January
Hewlett Bay Park, NY
- Average snowfall in January: 0.67"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in January
Hewlett Bay Park, NY
- Average snowfall days in January: 4.6 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in January
Hewlett Bay Park, NY
- Average sea temperature in January: 42.4°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in January /
Average sunshine in January
Hewlett Bay Park, NY
- Average daylight in January: 9h and 42min
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 6min
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
Hewlett Bay Park, NY
- Average sunshine days in January: 19.8 days
The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in January
Hewlett Bay Park, 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
Hewlett Bay Park, NY
- Average cloud cover in January: 43
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Hewlett Bay Park, 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).
