January weather forecast and climate
Hewlett Bay Park, NY

Weather in January

January, the same as December, is a wintry winter month in Hewlett Bay Park, New York, with average temperature fluctuating between 28.2°F (-2.1°C) and 37°F (2.8°C).

Temperature

With an average high-temperature of 37°F (2.8°C) and an average low-temperature of 28.2°F (-2.1°C), January is the coldest month.

Humidity

In January, the average relative humidity in Hewlett Bay Park is 73%.

Rainfall

January is the month with the least rainfall in Hewlett Bay Park, New York. Rain falls for 7.3 days and accumulates 0.91" (23mm) of precipitation.

Snowfall

Months with snowfall are January through March, October through December. In January, in Hewlett Bay Park, it is snowing for 4.6 days. Throughout January, 0.67" (17mm) of snow is accumulated. 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 January, the average ocean temperature is 42.4°F (5.8°C).
Note: Swimming in 42.4°F (5.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in Hewlett Bay Park is 9.7h.

Sunshine

In January, the average sunshine is 5.1h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Hewlett Bay Park?

With an average high-temperature of 37°F (2.8°C) and an average low-temperature of 28.2°F (-2.1°C), January is the coldest month.

What is the average humidity in January in Hewlett Bay Park?

The average relative humidity in January in Hewlett Bay Park is 73%.

What is the driest month in Hewlett Bay Park?

January is the month with the least rainfall in Hewlett Bay Park, New York. Rain falls for 7.3 days and accumulates 0.91" (23mm) of precipitation.

How much does it rain in Hewlett Bay Park in January?

In Hewlett Bay Park, New York, in January, during 7.3 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

How many days does it snow in January in Hewlett Bay Park?

In Hewlett Bay Park, in January, during 4.6 snowfall days, 0.67" (17mm) of snow is typically accumulated.

What is the water temperature in January in Hewlett Bay Park?

In Hewlett Bay Park, New York, in January, the average water temperature is 42.4°F (5.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in January in Hewlett Bay Park?

The average length of the day in January in Hewlett Bay Park, New York, is 9.7h.

How long on average sun shines in January in Hewlett Bay Park?

The average sunshine in January in Hewlett Bay Park is 5.1h.

What is the month with the lowest UV index in Hewlett Bay Park?

Months with the lowest UV index in Hewlett Bay Park, New York, are January through March, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Hewlett Bay Park?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in January
Hewlett Bay Park, NY

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).

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Average pressure in January
Hewlett Bay Park, NY

Average pressure in January - Hewlett Bay Park, NY
  • Average pressure in January: 30.06"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in January
Hewlett Bay Park, NY

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).

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Average humidity in January
Hewlett Bay Park, NY

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%).

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Average rainfall in January
Hewlett Bay Park, NY

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").

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Average rainfall days in January
Hewlett Bay Park, NY

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).

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Average snowfall in January
Hewlett Bay Park, NY

Average snowfall in January - Hewlett Bay Park, NY
  • Average snowfall in January: 0.67"

The month with the highest snowfall is March (1.02").
Months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in January
Hewlett Bay Park, NY

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).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in January
Hewlett Bay Park, NY

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).

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Average daylight in January /
Average sunshine in January
Hewlett Bay Park, NY

Average daylight in January / Average sunshine in January - Hewlett Bay Park, NY
  • Average daylight in January: 9.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 5.1h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in January
Hewlett Bay Park, NY

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).

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Average UV index in January
Hewlett Bay Park, NY

Average UV index in January - Hewlett Bay Park, NY
  • Average UV index in January: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in January
Hewlett Bay Park, NY

Average cloud cover in January - Hewlett Bay Park, NY
  • Average cloud cover in January: 43

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).

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Average visibility in January
Hewlett Bay Park, NY

Average visibility in January - Hewlett Bay Park, NY
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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