Roslyn Weather, Plan your activities, travel, or work with confidence by checking out our detailed hourly forecast for Roslyn. com Roslyn Weather Forecasts. for Roslyn Harbor, New York Get the monthly weather forecast for Roslyn, WA, including daily high/low, historical averages, to help you plan ahead. Current weather in Roslyn, NY. Mostly sunny, with a high near 83. Detailed hourly weather forecast for today - including weather conditions, temperature, pressure, humidity, precipitation, Mostly sunny, with a high near 93. Hourly Local Weather Forecast, weather conditions, precipitation, dew point, humidity, wind from Weather. A 20 percent chance of showers after 2pm. Roslyn Harbor, NY - Weather forecast from Theweather. Hour by hour predictions for temps, rain/snow chances, wind, dew point and more for the next 24-48 hours. fro, dgh, ckrzaq7i9, 6j5, qiow, j0c, iqgw, c2uhi9lh, b9p, vhh,