Monthly weather forecast and climate
Port Jefferson Station, NY

January, like December, in Port Jefferson Station, New York, is another cold winter month, with temperature in the range of an average low of 29.1°F (-1.6°C) and an average high of 37.6°F (3.1°C). The coldest month is January, with an average high-temperature of 37.6°F (3.1°C) and an average low-temperature of 29.1°F (-1.6°C). Weather in January »

The last month of the winter, February, is another cold month in Port Jefferson Station, New York, with average temperature varying between 30.4°F (-0.9°C) and 38.8°F (3.8°C). In February, the average high-temperature is practically the same as in January - a still cold 38.8°F (3.8°C). Weather in February »

The first month of the spring, March, is a frosty month in Port Jefferson Station, New York, with average temperature fluctuating between 36°F (2.2°C) and 43.9°F (6.6°C). In Port Jefferson Station, the average high-temperature in March is essentially the same as in February - a frosty 43.9°F (6.6°C). Weather in March »

April is a cool spring month in Port Jefferson Station, New York, with average temperature varying between 44.6°F (7°C) and 52.9°F (11.6°C). In Port Jefferson Station, the average high-temperature rises, from a frosty 43.9°F (6.6°C) in March, to a cool 52.9°F (11.6°C). Weather in April »

The last month of the spring, May, is an enjoyable month in Port Jefferson Station, New York, with average temperature fluctuating between 62.6°F (17°C) and 53.6°F (12°C). In May, the average high-temperature increases, from a cool 52.9°F (11.6°C) in April, to an enjoyable 62.6°F (17°C). Weather in May »

June, the first month of the summer, in Port Jefferson Station, is an agreeable month, with average temperature ranging between min 63.1°F (17.3°C) and max 71.2°F (21.8°C). In June, the average high-temperature slightly increases, from an enjoyable 62.6°F (17°C) in May, to a pleasant 71.2°F (21.8°C). Weather in June »

July is a warm summer month in Port Jefferson Station, New York, with average temperature ranging between max 79.2°F (26.2°C) and min 71.1°F (21.7°C). The warmest month is July, with an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 71.1°F (21.7°C). Weather in July »

The last month of the summer, August, is another warm month in Port Jefferson Station, New York, with average temperature varying between 71.1°F (21.7°C) and 78.4°F (25.8°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 78.4°F (25.8°C). Weather in August »

September, the first month of the autumn, in Port Jefferson Station, is still a pleasant month, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 72.3°F (22.4°C). In Port Jefferson Station, the average high-temperature in September marginally drops, from a moderately hot 78.4°F (25.8°C) in August, to a pleasant 72.3°F (22.4°C). Weather in September »

October, the same as September, is another comfortable autumn month in Port Jefferson Station, New York, with average temperature fluctuating between 55.4°F (13°C) and 62.6°F (17°C). In October, the average high-temperature drops, from a pleasant 72.3°F (22.4°C) in September, to an enjoyable 62.6°F (17°C). Weather in October »

November, the last month of the autumn, in Port Jefferson Station, is another cool month, with temperature in the range of an average low of 44.1°F (6.7°C) and an average high of 51.8°F (11°C). In Port Jefferson Station, the average high-temperature decreases, from a comfortable 62.6°F (17°C) in October, to a fresh 51.8°F (11°C). Weather in November »

The first month of the winter, December, is still a chilly month in Port Jefferson Station, New York, with average temperature varying between 36.5°F (2.5°C) and 43.7°F (6.5°C). In December, the average high-temperature marginally drops, from a fresh 51.8°F (11°C) in November, to a chilly 43.7°F (6.5°C). Weather in December »

What is the coldest month in Port Jefferson Station?

January is the coldest month in Port Jefferson Station, with an average high-temperature of 37.6°F (3.1°C) and an average low-temperature of 29.1°F (-1.6°C).

How much does it rain in Port Jefferson Station?

In Port Jefferson Station, during the entire year, the rain falls for 146.8 days and collects up to 33.78" (858mm) of precipitation.

What is the driest month in Port Jefferson Station?

The month with the least rainfall is January when the rain falls for 6.8 days and typically collects 2.05" (52mm) of precipitation.

When does it snow in Port Jefferson Station?

Months with snowfall in Port Jefferson Station are January through March, October through December.

How many days does it snow in Port Jefferson Station?

Throughout the year, in Port Jefferson Station, there are 12.6 snowfall days, and 5.59" (142mm) of snow is accumulated.

When is the lowest UV index in Port Jefferson Station?

Months with the lowest UV index in Port Jefferson Station are January through March, November and December, with an average maximum UV index of 2.

What is the month with the least sunshine in Port Jefferson Station?

The month with the least sunshine is February, with an average of 4.7h of sunshine.

What is the snowiest month in Port Jefferson Station?

The month with the most snowfall is March when snow falls for 2.3 days and typically aggregates up to 2.13" (54mm) of snow.

When it does not snow in Port Jefferson Station?

April through September are months without snowfall.

What are the most humid months in Port Jefferson Station?

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

When are the longest days in Port Jefferson Station?

June has the longest days of the year in Port Jefferson Station, New York, with an average of 15.1h of daylight.

What are the months with the highest UV index in Port Jefferson Station?

Months with the highest UV index in Port Jefferson Station are June through August, with an average maximum UV index of 6.

What is the warmest month in Port Jefferson Station?

With an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 71.1°F (21.7°C), July is the warmest month.

What month has the most sunshine in Port Jefferson Station?

The month with the most sunshine in Port Jefferson Station, New York, is July, with an average of 10.6h of sunshine.

What is the least humid month in Port Jefferson Station?

The least humid month in Port Jefferson Station, New York, is November, with an average relative humidity of 71%.

What is the wettest month in Port Jefferson Station?

December is the month with the most rainfall in Port Jefferson Station, New York. Rain falls for 11.4 days and accumulates 3.58" (91mm) of precipitation.

What is the month with the shortest days in Port Jefferson Station?

The month with the shortest days in Port Jefferson Station is December, with an average of 9.3h of daylight.
Average temperature - Port Jefferson Station, NY
Average pressure - Port Jefferson Station, NY

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed - Port Jefferson Station, NY

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).

Average humidity - Port Jefferson Station, NY
Average rainfall - Port Jefferson Station, NY

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

Average rainfall days - Port Jefferson Station, NY

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).

Average snowfall - Port Jefferson Station, NY
Average snowfall days - Port Jefferson Station, NY

The month with the highest number of snowfall days is February (4.4 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Port Jefferson Station, NY

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

Average sunshine days - Port Jefferson Station, NY
Average UV index - Port Jefferson Station, NY
Average visibility - Port Jefferson Station, NY

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).