January weather forecast and climate
Hewlett, NY

January, the same as December, is another cold winter month in Hewlett, New York, with average temperature varying between 28.2°F (-2.1°C) and 37°F (2.8°C).

Temperature

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

Humidity

In January, the average relative humidity is 73%.

Rainfall

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

Snowfall

Months with snowfall in Hewlett, New York, are January through March, October through December. In January, it is snowing for 4.6 days. Throughout January, 0.67" (17mm) of snow is accumulated. Throughout the year, in Hewlett, there are 15.8 snowfall days, and 2.95" (75mm) of snow is accumulated.

Daylight

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

Sunshine

In January, the average sunshine is 5.1h.

UV index

Months with the lowest UV index 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 low health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Hewlett?

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 in Hewlett, New York.

What is the temperature in January in Hewlett?

In January, in Hewlett, New York, the average high-temperature is 37°F (2.8°C), and the average low-temperature is 28.2°F (-2.1°C).

What is the average humidity in January in Hewlett?

In January, the average relative humidity is 73%.

How many days does it rain in January in Hewlett?

In Hewlett, New York, during January, the rain falls for 7.3 days and regularly aggregates up to 0.91" (23mm) of precipitation.

What is the driest month in Hewlett?

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

How many days does it snow in January in Hewlett?

In Hewlett, in January, snow falls for 4.6 days, with typically accumulated 0.67" (17mm) of snow.

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

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

How many hours of sunshine does Hewlett have in January?

The average sunshine in January is 5.1h.

When is the lowest UV index in Hewlett?

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

What is the UV index reading in January in Hewlett?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the UV radiation.
Average temperature in January - Hewlett, NY
  • Average high temperature in January: 2.8°C

The warmest month (with the highest average high temperature) is July (27°C).
The month with the lowest average high temperature is January (2.8°C).

  • Average low temperature in January: -2.1°C

The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is January (-2.1°C).

Average pressure in January - Hewlett, NY
  • Average pressure in January: 1017.8mbar

The month with the highest atmospheric pressure is November (1019.3mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in January - Hewlett, NY
  • Average wind speed in January: 19.9km/h

The windiest month (with the highest average wind speed) is January (19.9km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).

Average humidity in January - Hewlett, 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, NY
  • Average rainfall in January: 23mm

The wettest months (with the highest rainfall) are July and August (59mm).
The driest month (with the least rainfall) is January (23mm).

Average rainfall days in January - Hewlett, 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, NY
  • Average snowfall in January: 17mm

The month with the highest snowfall is March (26mm).
Months with the least snowfall are April, May, June, July, August and September (0mm).

Average snowfall days in January - Hewlett, 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).

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

The month with the longest days is June (Average daylight: 15.1h).
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).

Average sunshine days in January - Hewlett, 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, 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).

Average cloud cover in January - Hewlett, 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).

Average visibility in January - Hewlett, NY
  • Average visibility in January: 9km

Months with the highest visibility are April, June, July, August, September, October and November (10km).
Months with the lowest visibility are January, February, March, May and December (9km).