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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Roslyn Harbor, New York, is an icy winter month, with temperature in the range of an average low of 27.3°F (-2.6°C) and an average high of 36.5°F (2.5°C). Roslyn Harbor's January weather reaches an average high of 36.5°F (2.5°C) and an average low of 27.3°F (-2.6°C), making it the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Roslyn Harbor, New York, with an average temperature fluctuating between 39°F (3.9°C) and 28.8°F (-1.8°C). Roslyn Harbor records an average high-temperature of a still icy 39°F (3.9°C) in February, maintaining a close correlation with January's 36.5°F (2.5°C). Weather in February »
Weather in March
March, the first month of the spring in Roslyn Harbor, is a chilly month, with an average temperature fluctuating between 45.1°F (7.3°C) and 35.2°F (1.8°C). March's arrival brings a slight change in high-temperatures, adjusting from an icy 39°F (3.9°C) in February to a frosty 45.1°F (7.3°C). Weather in March »
Weather in April
April is a fresh spring month in Roslyn Harbor, New York, with temperature in the range of an average high of 55°F (12.8°C) and an average low of 44.2°F (6.8°C). As March transitions into April, a change in temperatures is observed, with average highs moving from a chilly 45.1°F (7.3°C) to a fresh 55°F (12.8°C). Weather in April »
Weather in May
May, the last month of the spring in Roslyn Harbor, is a refreshing month, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 54.1°F (12.3°C). The beginning of May signals a rise in the average high-temperature, moving from a fresh 55°F (12.8°C) in April to a comfortable 65.3°F (18.5°C). Weather in May »
Weather in June
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). June's arrival coincides with a rise in the average high-temperature, moving from May's enjoyable 65.3°F (18.5°C) to a warm 74.5°F (23.6°C). Weather in June »
Weather in July
July, like June, in Roslyn Harbor, New York, is a moderately hot summer month, with an average temperature fluctuating between 81.5°F (27.5°C) and 70.3°F (21.3°C). With average high temperatures of 81.5°F (27.5°C) and lows of 70.3°F (21.3°C), July is the warmest month. July's mean heat index is estimated at a tropical 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Roslyn Harbor, is another warm month, with an average temperature varying between 70.3°F (21.3°C) and 80.4°F (26.9°C). Roslyn Harbor starts August with an average high-temperature of a still warm 80.4°F (26.9°C), hinting at a minimal fluctuation from July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Roslyn Harbor, New York, with an average temperature varying between 73.4°F (23°C) and 63.5°F (17.5°C). A modest decline in the average high-temperature is seen during September, decreasing from a warm 80.4°F (26.9°C) in August to a still moderately hot 73.4°F (23°C). Weather in September »
Weather in October
October, the same as September, is another refreshing 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). The move into October indicates a reduction in the average high-temperature, down from September's warm 73.4°F (23°C) to a comfortable 63°F (17.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Roslyn Harbor, New York, with an average temperature ranging between min 42.3°F (5.7°C) and max 51.1°F (10.6°C). The average high-temperature drops in November, from October's refreshing 63°F (17.2°C) to a fresh 51.1°F (10.6°C). Weather in November »
Weather in December
December, the first month of the winter in Roslyn Harbor, is still a cold month, with an average temperature varying between 34.7°F (1.5°C) and 42.4°F (5.8°C). The start of December signals a gentle decrease in the average high-temperature, transitioning from a cool 51.1°F (10.6°C) in November to an icy 42.4°F (5.8°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Roslyn Harbor?
Roslyn Harbor, New York, reaches its average lowest temperatures in January, measuring 36.5°F (2.5°C) at the peak and 27.3°F (-2.6°C) at the lowest.
How much does it rain in Roslyn Harbor?
Throughout the year, there are 165.9 rainfall days, and 37.56" (954mm) of precipitation is accumulated.
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?
Throughout the year, in Roslyn Harbor, New York, there are 22.2 snowfall days, and 7.24" (184mm) of snow is accumulated.
What are the months 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, New York.
What are the most humid months in Roslyn Harbor?
The months with the highest humidity are February, May and December, with an average relative humidity of 75%.
What month is the ocean coldest in Roslyn Harbor?
February is the month with the coldest seawater, with an average ocean temperature of 39.9°F (4.4°C).
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.
When does it snow the most in Roslyn Harbor?
The month with the most snowfall in Roslyn Harbor is March, when snow falls for 4.7 days and typically aggregates up to 2.01" (51mm) of snow.
When is Daylight Saving Time (DST) in Roslyn Harbor?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Roslyn Harbor, New York, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow in Roslyn Harbor?
In Roslyn Harbor, snow does not fall in May through October.
When are the longest days in Roslyn Harbor?
With an average of 15h and 6min of daylight, June has the longest days of the year in Roslyn Harbor.
When is 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.
What month is the hottest in Roslyn Harbor?
In Roslyn Harbor, temperatures reach their average annual highs in July, measuring 81.5°F (27.5°C) and a minimum average of 70.3°F (21.3°C).
What month has the most sunshine in Roslyn Harbor?
The month with the most sunshine in Roslyn Harbor 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 in Roslyn Harbor, New York.
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 in Roslyn Harbor.
What is the driest month in Roslyn Harbor?
The month with the least rainfall 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?
December is the month with the most rainfall in Roslyn Harbor, New York. Rain falls for 12.9 days and accumulates 4.06" (103mm) of precipitation.
What is the month with the shortest days in Roslyn Harbor?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Roslyn Harbor, NY
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (36.5°F).
The months with the highest average low temperature are July and August (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure
Roslyn Harbor, NY
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Roslyn Harbor, NY
- Average wind speed in January:
11.2mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.7mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7.4mph - Average wind speed in September:
8.3mph - Average wind speed in October:
10mph - Average wind speed in November:
10.5mph - Average wind speed in December:
10.8mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity
Roslyn Harbor, NY
The months with the highest relative humidity are February, May and December (75%).
The months with the lowest relative humidity are August and November (71%).
Average rainfall
Roslyn Harbor, NY
- Average rainfall in January:
2.48" - Average rainfall in February:
2.48" - Average rainfall in March:
2.99" - Average rainfall in April:
3.23" - Average rainfall in May:
3.11" - Average rainfall in June:
3.07"
The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days
Roslyn Harbor, NY
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
17.9 days - Average rainfall days in August:
16.2 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
12.9 days
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
The month with the highest snowfall is March (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Roslyn Harbor, NY
- Average snowfall days in January:
6.8 days - Average snowfall days in February:
6 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
3.5 days
The month with the highest number of snowfall days is January (6.8 days).
The 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 (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 daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 January:
5h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 3min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 4min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days
Roslyn Harbor, NY
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
13 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
12.5 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
15.3 days - Average sunshine days in November:
18 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (10.6 days).
Average UV index
Roslyn Harbor, NY
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).
Average cloud cover
Roslyn Harbor, NY
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility
Roslyn Harbor, NY
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).
Roslyn Harbor, New York, USA
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