May weather forecast
Port Jefferson Station, NY

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Weather in May

The last month of the spring, May, is a comfortable month in Port Jefferson Station, New York, with an average temperature fluctuating between 53.6°F (12°C) and 62.6°F (17°C).

Temperature

May sees a rise in the average high-temperature, climbing from a cool 52.9°F (11.6°C) in April to an enjoyable 62.6°F (17°C). An average low-temperature of 53.6°F (12°C) is witnessed throughout the month of May in Port Jefferson Station, a mere drop from the daytime peak.

Humidity

May and June, with an average relative humidity of 77%, are the most humid months in Port Jefferson Station.

Rainfall

In Port Jefferson Station, in May, during 15.3 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Port Jefferson Station, during the entire year, the rain falls for 146.8 days and collects up to 33.78" (858mm) of precipitation.

Snowfall

April through September are months without snowfall.

Daylight

In Port Jefferson Station, New York, the average length of the day in May is 14h and 29min.
On the first day of May in Port Jefferson Station, sunrise is at 5:49 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:17 pm EDT.

Sunshine

The average sunshine in May in Port Jefferson Station is 8.7h.

UV index

The average daily maximum UV index in May in Port Jefferson Station, New York, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the average May temperature in Port Jefferson Station?

The average high-temperature, in May, in Port Jefferson Station, is 62.6°F (17°C), while the average low-temperature is 53.6°F (12°C).

What is the most humid month in Port Jefferson Station?

May and June, with an average relative humidity of 77%, are most humid months in Port Jefferson Station.

What is the average humidity in May in Port Jefferson Station?

In May, the average relative humidity is 77%.

How much does it rain in Port Jefferson Station in May?

In Port Jefferson Station, New York, in May, it is raining for 15.3 days, with typically 2.76" (70mm) of accumulated precipitation.

When it does not snow in Port Jefferson Station?

In Port Jefferson Station, New York, snow does not fall in April through September.

What is the average length of the day in May in Port Jefferson Station?

The average day length in May in Port Jefferson Station, New York, is 14h and 29min.

What time are sunrise and sunset in May in Port Jefferson Station?

On the first day of May in Port Jefferson Station, New York, sunrise is at 5:49 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:17 pm EDT.

How many hours of sunshine does Port Jefferson Station have in May?

The average sunshine duration in May in Port Jefferson Station, New York, is 8.7h.

What is the UV index reading in May in Port Jefferson Station?

In Port Jefferson Station, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Port Jefferson Station, NY

Average temperature in May - Port Jefferson Station, NY
  • Average high temperature in May: 62.6°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 May: 53.6°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).

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Average pressure in May
Port Jefferson Station, NY

Average pressure in May - Port Jefferson Station, NY
  • Average pressure in May: 30.01"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).

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Average wind speed in May
Port Jefferson Station, NY

Average wind speed in May - Port Jefferson Station, NY
  • Average wind speed in May: 9.4mph

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).

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Average humidity in May
Port Jefferson Station, NY

Average humidity in May - Port Jefferson Station, NY
  • Average humidity in May: 77%

The months with the highest relative humidity are May and June (77%).
The month with the lowest relative humidity is November (71%).

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Average rainfall in May
Port Jefferson Station, NY

Average rainfall in May - Port Jefferson Station, NY
  • Average rainfall in May: 2.76"

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in May
Port Jefferson Station, NY

Average rainfall days in May - Port Jefferson Station, NY
  • Average rainfall days in May: 15.3 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).

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Average snowfall in May
Port Jefferson Station, NY

Average snowfall in May - Port Jefferson Station, NY
  • Average snowfall in May: 0"

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").

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Average snowfall days in May
Port Jefferson Station, NY

Average snowfall days in May - Port Jefferson Station, NY
  • Average snowfall days in May: 0 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).

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Average daylight in May /
Average sunshine in May
Port Jefferson Station, NY

Average daylight in May / Average sunshine in May - Port Jefferson Station, NY
  • Average daylight in May: 14h and 3min

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 May: 8h and 4min

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).

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Average sunshine days in May
Port Jefferson Station, NY

Average sunshine days in May - Port Jefferson Station, NY
  • Average sunshine days in May: 14.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (13 days).

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Average UV index in May
Port Jefferson Station, NY

Average UV index in May - Port Jefferson Station, NY
  • Average UV index in May: 5

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).

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Average cloud cover in May
Port Jefferson Station, NY

Average cloud cover in May - Port Jefferson Station, NY
  • Average cloud cover in May: 43

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in May
Port Jefferson Station, NY

Average visibility in May - Port Jefferson Station, NY
  • Average visibility in May: 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).

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Port Jefferson Station, New York, USA

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