January weather forecast
Nassau, NY

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Weather in January

January, like December, is another subzero cold winter month in Nassau, New York, with an average temperature varying between 16.5°F (-8.6°C) and 28.9°F (-1.7°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

In Nassau, the average relative humidity in January 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 in Nassau, New York, are January through May, October through December. In Nassau, in January, snow falls for 10.8 days, with typically accumulated 4.09" (104mm) of snow. Throughout the year, there are 41.1 snowfall days, and 18.9" (480mm) of snow is accumulated.

Daylight

The average length of the day in January in Nassau 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 Nassau, the average sunshine in January is 4.2h.

UV index

The months with the lowest UV index in Nassau are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In January, the average maximum UV index of 1 translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What month is the coldest in Nassau?

During the coldest month in Nassau, January, temperatures average a high of 28.9°F (-1.7°C) and a low of 16.5°F (-8.6°C).

How cold is it in Nassau in January?

The high-temperature, in January, in Nassau, is 28.9°F (-1.7°C), while the low-temperature averages to 16.5°F (-8.6°C).

What is the average humidity in January in Nassau?

In January, the average relative humidity in Nassau is 81%.

What is the driest month in Nassau?

January is the month with the least rainfall. Rain falls for 7.3 days and accumulates 1.61" (41mm) of precipitation.

How much does it rain in Nassau in January?

In Nassau, in January, during 7.3 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

How many days does it snow in January in Nassau?

In January, it is snowing for 10.8 days. Throughout January, 4.09" (104mm) of snow is accumulated.

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

The average day length in January in Nassau, New York, is 9h and 29min.

What time are sunrise and sunset in January in Nassau?

In January, on the first day of the month, sunrise is at 7:24 am and sunset at 4:31 pm. On the last day of the month, in Nassau, New York, sunrise is at 7:09 am and sunset at 5:06 pm EST.

How many hours of sunshine does Nassau have in January?

In January, the average sunshine duration in Nassau is 4.2h.

When is the lowest UV index in Nassau?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in January in Nassau?

The average daily maximum UV index in January in Nassau, New York, is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Nassau, NY

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).

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Average pressure in January
Nassau, NY

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).

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Average wind speed in January
Nassau, NY

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).

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Average humidity in January
Nassau, NY

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%).

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Average rainfall in January
Nassau, NY

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").

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Average rainfall days in January
Nassau, NY

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).

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Average snowfall in January
Nassau, NY

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").

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Average snowfall days in January
Nassau, NY

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).

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Average daylight in January /
Average sunshine in January
Nassau, NY

Average daylight in January / Average sunshine in January - Nassau, NY
  • Average daylight in January: 9h and 3min

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 1min

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).

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Average sunshine days in January
Nassau, NY

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).

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Average UV index in January
Nassau, NY

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).

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Average cloud cover in January
Nassau, NY

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).

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Average visibility in January
Nassau, NY

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).

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Nassau, New York, USA

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