Roslyn Harbor
New York, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Roslyn Harbor, NY

January, the same as December, is a wintry winter month in Roslyn Harbor, New York, with average temperature varying between 27.3°F (-2.6°C) and 36.5°F (2.5°C). With an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 27.3°F (-2.6°C), January is the coldest month. Weather in January »

The last month of the winter, February, is also a wintry month in Roslyn Harbor, New York, with average temperature varying between 39°F (3.9°C) and 28.8°F (-1.8°C). In February, the average high-temperature is practically the same as in January - a still cold 39°F (3.9°C). Weather in February »

March, the first month of the spring, in Roslyn Harbor, is a chilly month, with average temperature fluctuating between 35.2°F (1.8°C) and 45.1°F (7.3°C). In Roslyn Harbor, New York, the average high-temperature slightly increases, from a wintry 39°F (3.9°C) in February, to a frosty 45.1°F (7.3°C). Weather in March »

April in Roslyn Harbor, New York, is a cool spring month, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 55°F (12.8°C). In Roslyn Harbor, the average high-temperature rises, from a chilly 45.1°F (7.3°C) in March, to a fresh 55°F (12.8°C). Weather in April »

The last month of the spring, May, is an enjoyable month in Roslyn Harbor, New York, with average temperature varying between 65.3°F (18.5°C) and 54.1°F (12.3°C). In May, the average high-temperature rises, from a cool 55°F (12.8°C) in April, to a comfortable 65.3°F (18.5°C). Weather in May »

The first month of the summer, June, is a moderately hot month in Roslyn Harbor, New York, with average temperature ranging between min 63.1°F (17.3°C) and max 74.5°F (23.6°C). In Roslyn Harbor, the average high-temperature in June rises, from a comfortable 65.3°F (18.5°C) in May, to a warm 74.5°F (23.6°C). Weather in June »

July, like June, in Roslyn Harbor, New York, is a moderately hot summer month, with average temperature ranging between min 70.3°F (21.3°C) and max 81.5°F (27.5°C). With an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 70.3°F (21.3°C), July is the warmest month. The average heat index is estimated at a tropical 86.2°F (30.1°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Roslyn Harbor, New York, with average temperature fluctuating between 70.3°F (21.3°C) and 80.4°F (26.9°C). In August, the average high-temperature is practically the same as in July - a still warm 80.4°F (26.9°C). Weather in August »

September, the first month of the autumn, in Roslyn Harbor, is also a moderately hot month, with average temperature fluctuating between 63.5°F (17.5°C) and 73.4°F (23°C). In September, the average high-temperature slightly decreases, from 80.4°F (26.9°C) in August, to a still warm 73.4°F (23°C). Weather in September »

October, the same as September, is another comfortable autumn month in Roslyn Harbor, New York, with average temperature fluctuating between 53.4°F (11.9°C) and 63°F (17.2°C). In October, the average high-temperature drops, from a moderately hot 73.4°F (23°C) in September, to a comfortable 63°F (17.2°C). Weather in October »

The last month of the autumn, November, is another cool month in Roslyn Harbor, New York, with temperature in the range of an average high of 51.1°F (10.6°C) and an average low of 42.3°F (5.7°C). In Roslyn Harbor, the average high-temperature drops, from a comfortable 63°F (17.2°C) in October, to a fresh 51.1°F (10.6°C). Weather in November »

December, the first month of the winter, in Roslyn Harbor, is still a cold month, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 42.4°F (5.8°C). In December, the average high-temperature slightly decreases, from a cool 51.1°F (10.6°C) in November, to a cold 42.4°F (5.8°C). Weather in December »

What is the coldest month in Roslyn Harbor?

January is the coldest month in Roslyn Harbor, New York, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 27.3°F (-2.6°C).

How much does it rain in Roslyn Harbor?

In Roslyn Harbor, during the entire year, the rain falls for 165.9 days and collects up to 37.56" (954mm) of precipitation.

When does it snow in Roslyn Harbor?

January through April, November and December are months with snowfall in Roslyn Harbor.

How many days does it snow in Roslyn Harbor?

In Roslyn Harbor, during the entire year, snow falls for 22.2 days, and aggregates up to 7.24" (184mm) of snow.

What is the month with the lowest UV index in Roslyn Harbor?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Roslyn Harbor.

What are the most humid months in Roslyn Harbor?

February, May and December, with an average relative humidity of 75%, are most humid months.

What is the month with the coldest ocean in Roslyn Harbor?

With an average ocean temperature of 39.9°F (4.4°C), February is the month with the coldest seawater.

What is the month with the least sunshine in Roslyn Harbor?

With an average of 4.8h of sunshine, February has the least sunshine of the year in Roslyn Harbor.

When does it snow the most in Roslyn Harbor?

March is the month with the most snowfall. Snow falls for 4.7 days and accumulates 2.01" (51mm) of snow.

When it does not snow in Roslyn Harbor?

May through October are months without snowfall.

When are the longest days in Roslyn Harbor?

With an average of 15.1h of daylight, June has the longest days of the year.

When is the highest UV index in Roslyn Harbor?

Months with the highest UV index in Roslyn Harbor are June through August, with an average maximum UV index of 6.

What is the warmest month in Roslyn Harbor?

July is the warmest month in Roslyn Harbor, New York, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 70.3°F (21.3°C).

What month has the most sunshine in Roslyn Harbor?

The month with the most sunshine is July, with an average of 10.7h of sunshine.

What is the least humid month in Roslyn Harbor?

August and November, with an average relative humidity of 71%, are the least humid months.

When is the ocean warmest in Roslyn Harbor?

With an average ocean temperature of 74.1°F (23.4°C), August is the month with the warmest seawater.

What is the driest month in Roslyn Harbor?

September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 2.4" (61mm) of precipitation.

What is the wettest month in Roslyn Harbor?

The month with the most rainfall in Roslyn Harbor, New York, is December when the rain falls for 12.9 days and typically aggregates up to 4.06" (103mm) of precipitation.

What is the month with the shortest days in Roslyn Harbor?

The month with the shortest days is December, with an average of 9.3h of daylight.
Average temperature - Roslyn Harbor, NY
Average humidity - Roslyn Harbor, NY

Months with the highest relative humidity are February, May and December (75%).
Months with the lowest relative humidity are August and November (71%).

Average rainfall - Roslyn Harbor, NY
Average rainfall days - Roslyn Harbor, NY

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (9.3 days).

Average snowfall - Roslyn Harbor, NY
Average snowfall days - Roslyn Harbor, NY

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature - Roslyn Harbor, NY

The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (4.4°C).

Average daylight / Average sunshine - Roslyn Harbor, 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: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average UV index - Roslyn Harbor, NY