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 36.5°F (2.5°C) and 27.3°F (-2.6°C). The coldest month is January, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 27.3°F (-2.6°C). Weather in January »

The last month of the winter, February, is another cold month in Roslyn Harbor, New York, with average temperature fluctuating between 39°F (3.9°C) and 28.8°F (-1.8°C). In Roslyn Harbor, the average high-temperature in February 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 frosty month, with average temperature ranging between max 45.1°F (7.3°C) and min 35.2°F (1.8°C). In March, the average high-temperature slightly increases, from a cold 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 average temperature fluctuating between 44.2°F (6.8°C) and 55°F (12.8°C). In April, the average high-temperature rises, from a chilly 45.1°F (7.3°C) in March, to a cool 55°F (12.8°C). Weather in April »

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

June, the first month of the summer, in Roslyn Harbor, is a moderately hot month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 74.5°F (23.6°C). In June, the average high-temperature 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 varying between 70.3°F (21.3°C) and 81.5°F (27.5°C). July is the warmest month, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 70.3°F (21.3°C). The average heat index in July is appraised at a tropical 86.2°F (30.1°C). Weather in July »

August, the last month of the summer, in Roslyn Harbor, is also a moderately hot month, 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 almost the same as in July - a still moderately hot 80.4°F (26.9°C). Weather in August »

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

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

November, the last month of the autumn, in Roslyn Harbor, is another cool month, 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 November, the average high-temperature drops, from an enjoyable 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 also a wintry month, with average temperature varying between 42.4°F (5.8°C) and 34.7°F (1.5°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?

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 in Roslyn Harbor, New York.

How much does it rain in Roslyn Harbor?

In Roslyn Harbor, New York, 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, New York.

How many days does it snow in Roslyn Harbor?

Throughout the year, there are 22.2 snowfall days, and 7.24" (184mm) of snow is accumulated.

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?

Months with the highest humidity are February, May and December, with an average relative humidity of 75%.

When is the ocean coldest in Roslyn Harbor?

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

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

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

When does it snow the most in Roslyn Harbor?

The month with the most snowfall is March when snow falls for 4.7 days and typically aggregates up to 2.01" (51mm) of snow.

When it does not snow in Roslyn Harbor?

May through October are months without snowfall in Roslyn Harbor, New York.

When are the longest days in Roslyn Harbor?

June has the longest days of the year in Roslyn Harbor, with an average of 15.1h of daylight.

What are the months with the highest UV index in Roslyn Harbor?

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

What is the warmest month in Roslyn Harbor?

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.

What month has the most sunshine in Roslyn Harbor?

With an average of 10.7h of sunshine, July has the most sunshine of the year in Roslyn Harbor.

What is the least humid month in Roslyn Harbor?

Months with the lowest humidity in Roslyn Harbor, New York, are August and November, with an average relative humidity of 71%.

What is the month with the warmest ocean 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?

The month with the least rainfall in Roslyn Harbor, New York, is September when the rain falls for 12.9 days and typically collects 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?

With an average of 9.3h of daylight, December has the shortest days of the year in Roslyn Harbor.
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

The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the lowest rainfall) is September (2.4").

Average rainfall days - Roslyn Harbor, NY

The month with the highest number of rainy days is July (17.9 days).
The month with the lowest number of 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 lowest number of 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 (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

Average daylight / Average sunshine - Roslyn Harbor, NY
Average UV index - Roslyn Harbor, NY