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Roslyn (NY) Weather and Climate: A Comprehensive Guide

The climate in Roslyn is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to cold in the cooler months. It also has a relatively rain/snowy climate with high levels of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

In Roslyn, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 30°C in July to a chilly 5°C in February.

Nighttime temperatures can drop, with average lows reaching -4°C in February. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Roslyn experiences significant rain/snowfall throughout the year, averaging 1199 mm of precipitation annually. The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 125 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, November, still receives a respectable 69 mm of rainfall.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

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

Data from: New York City, the United States of America (21 KM, 13 Miles).

Daily hours of sunshine

Data from: New York City, the United States of America (21 KM, 13 Miles).

Average water temperature

The mean water temperature over the year ranges from 4°C in February to 23°C in August.

Water temperature over the year

Data from: New York City, the United States of America (21 KM, 13 Miles).

Forecast for Roslyn (NY)

Sun   Dec 22
-2°C | -9°C
NW 7 m/s
clear and no rain

clear and no rain

Mon   Dec 23
1°C | -9°C
SW 4 m/s
almost clear and no rain

almost clear and no rain

Tue   Dec 24
5°C | -1°C
SW 5 m/s
2.1 mm
broken clouds and  chance of snow

broken clouds and chance of snow

The best time of year to visit Roslyn in the United States of America

During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Roslyn?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Roslyn?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Roslyn?
    The coldest month is February with an average maximum temperature of 5°C.
  • Which is the wettest month in Roslyn?
    June tops the wettest month list with 125 mm of rainfall.
  • Which is the driest month in Roslyn?
    November is the driest month with 69 mm of precipitation.
  • Which is the sunniest month in Roslyn?
    July is the sunniest month with an average of 271 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.