Climate and monthly weather forecastRoslyn, NY
Climate and monthly weather forecast
Weather in January
January, like December, in Roslyn, New York, is an icy winter month, with temperature in the range of an average high of 36.5°F (2.5°C) and an average low of 27.3°F (-2.6°C). The coldest time of the year is January, with temperatures averaging a high of 36.5°F (2.5°C) and a low of 27.3°F (-2.6°C). Weather in January »Weather in February
February, the last month of the winter in Roslyn, is also a wintry month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 39°F (3.9°C). As February takes its course, Roslyn's average high-temperature registers at a still wintry 39°F (3.9°C), closely aligning with the preceding month. Weather in February »Weather in March
March, the first month of the spring in Roslyn, is a chilly month, with an average temperature varying between 35.2°F (1.8°C) and 45.1°F (7.3°C). As March arrives, Roslyn's weather shows a minor increase in high-temperatures, edging from February's icy 39°F (3.9°C) to a chilly 45.1°F (7.3°C). Weather in March »Weather in April
April in Roslyn, 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). The rise of average high-temperatures is seen in April, with an increase from a frosty 45.1°F (7.3°C) in March to a fresh 55°F (12.8°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Roslyn, New York, with an average temperature fluctuating between 54.1°F (12.3°C) and 65.3°F (18.5°C). The transition from April to May brings a temperature rise, with average high-temperatures increasing from a fresh 55°F (12.8°C) to an enjoyable 65.3°F (18.5°C). Weather in May »Weather in June
June, the first month of the summer in Roslyn, is a warm month, with temperature in the range of an average high of 74.5°F (23.6°C) and an average low of 63.1°F (17.3°C). With the arrival of June, the average high-temperature transitions from a comfortable 65.3°F (18.5°C) in May to a warm 74.5°F (23.6°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Roslyn, New York, with an average temperature ranging between min 70.3°F (21.3°C) and max 81.5°F (27.5°C). The temperatures reach their highest averages in July, with highs of 81.5°F (27.5°C) and lows of 70.3°F (21.3°C). The heat index in July is evaluated at a tropical 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Roslyn, is another warm month, with an average temperature fluctuating between 80.4°F (26.9°C) and 70.3°F (21.3°C). The onset of August brings with it an average high-temperature of a still moderately hot 80.4°F (26.9°C), showing a negligible variation from the month before. Weather in August »Weather in September
September, the first month of the autumn in Roslyn, is still a warm month, with an average temperature fluctuating between 73.4°F (23°C) and 63.5°F (17.5°C). September marks a gentle change in average high-temperature, declining from August's 80.4°F (26.9°C) to a still moderately hot 73.4°F (23°C). Weather in September »Weather in October
October, like September, in Roslyn, New York, is another refreshing autumn month, 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). October suggests a modest reduction in the average high-temperature, shifting from a warm 73.4°F (23°C) in September to a comfortable 63°F (17.2°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Roslyn, New York, with an average temperature fluctuating between 51.1°F (10.6°C) and 42.3°F (5.7°C). A moderate decline in the average high-temperature is seen during November, decreasing from a refreshing 63°F (17.2°C) in October to a fresh 51.1°F (10.6°C). Weather in November »Weather in December
December, the first month of the winter in Roslyn, is also a wintry month, with an average temperature ranging between min 34.7°F (1.5°C) and max 42.4°F (5.8°C). Roslyn's December weather shows a modest shift in high-temperatures, falling from November's cool 51.1°F (10.6°C) to an icy 42.4°F (5.8°C). Weather in December »Updated: Aug 4, 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
January proves to be the coldest month, recording an average maximum temperature of 36.5°F (2.5°C) and a minimum temperature of 27.3°F (-2.6°C).
In Roslyn, during the entire year, the rain falls for 165.9 days and collects up to 37.56" (954mm) of precipitation.
January through April, November and December are months with snowfall.
In Roslyn, during the entire year, snow falls for 22.2 days and aggregates up to 7.24" (184mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the highest humidity are February, May and December, with an average relative humidity of 75%.
February is the month with the coldest seawater, with an average ocean temperature of 39.9°F (4.4°C).
The month with the least sunshine is February, with an average of 4.8h of sunshine.
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.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
May through October are months without snowfall.
June has the longest days of the year, with an average of 15h and 6min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
July proves to be the warmest month, recording an average peak temperature of 81.5°F (27.5°C) and a minimum temperature of 70.3°F (21.3°C).
The month with the most sunshine is July, with an average of 10.7h of sunshine.
The months with the lowest humidity are August and November, with an average relative humidity of 71%.
The month with the warmest seawater in Roslyn, New York, is August, with an average ocean temperature of 74.1°F (23.4°C).
The month with the least rainfall is September, when the rain falls for 12.9 days and typically collects 2.4" (61mm) of precipitation.
The month with the most rainfall is December, when the rain falls for 12.9 days and typically aggregates up to 4.06" (103mm) of precipitation.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Roslyn, 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, 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, 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, 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, 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, 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, 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, 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, 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, NY
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 6min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
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, 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, 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, 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, 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).
