Roslyn (NY) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Roslyn.
Climate overview of Roslyn
The climate in Roslyn, New York State, United States of America, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in July to 5°C (41°F) in February.
The city has a wet climate, receiving around 1199 mm (47 in) of rain/snowfall per year. June is the wettest month. Sunshine peaks in July, when the city sees around 9.0 hours of sunshine per day.
Roslyn Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Roslyn — and find the best time to visit.
Monthly Temperature in Roslyn
In Roslyn, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 30°C (86°F) in July to a chilly 5°C (41°F) in February.
Nighttime temperatures range from 20°C (68°F) in July to -4°C (25°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Roslyn
Roslyn experiences significant rain/snowfall throughout the year, averaging 1199 mm (47 in) of precipitation annually. The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 125 mm (4.9 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, November, still receives a respectable 69 mm (2.7 in) of rainfall. For more details, please visit our Roslyn Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Roslyn
In Roslyn, summer days are longer and more sunny, with daily sunshine hours peaking at 9.0 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Roslyn
The mean water temperature over the year ranges from 4°C (39°F) in February to 23°C (73°F) in August.
Water temperature over the year
Humidity in Roslyn by Month
The relative humidity is high throughout the year in Roslyn.
The city experiences its highest humidity in September, reaching 68%. In April, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Roslyn
The average wind speed over the year ranges from 5 m/s (10 knots) to 7 m/s (14 knots). It is lower in May, June, July, August, September and October and higher in March. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Roslyn
Frequently asked questions about the climate in Roslyn
What is the best time to visit Roslyn?
September typically offers the most optimal weather in Roslyn. In contrast, January, February, March and December tend to have less optimal conditions.
What temperatures can I expect in Roslyn?
Daytime highs range from 5°C (41°F) in February to 30°C (86°F) in July. Nighttime lows range from -4°C (25°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Roslyn get?
Annual rainfall is around 1199 mm (47 in). June is the wettest month with 125 mm (4.9 in), while November is the driest with 69 mm (2.7 in).
How sunny is Roslyn?
Roslyn receives around 2,544 hours of sunshine per year. July is the sunniest month with 271 hours, while December is the cloudiest with just 141 hours. Overall, Roslyn enjoys abundant sunshine.
Roslyn 3-Day Forecast
Roslyn (NY) 3-Day Forecast
Roslyn on the map
Roslyn is highlighted — select any city to see its climate.
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