Roslyn Harbor, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roslyn Harbor, a village in Nassau County, New York.
Tonight
53°F
Partly Cloudy then Patchy Fog
Patchy fog after midnight. Partly cloudy, with a low around 53. Southwest wind around 6 mph.
7-day forecast for Roslyn Harbor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Partly Cloudy then Patchy Fog | 6 mph SW | 3% |
| Wednesday | 72°F | Patchy Fog then Sunny | 3 to 12 mph SW | 3% |
| Wednesday Night | 59°F | Partly Cloudy | 6 to 9 mph S | 2% |
| Thursday | 72°F | Chance Rain Showers | 6 to 12 mph S | 29% |
| Thursday Night | 62°F | Rain Showers | 6 to 9 mph S | 84% |
| Friday | 68°F | Showers And Thunderstorms | 7 mph S | 88% |
| Friday Night | 56°F | Showers And Thunderstorms | 7 mph W | 88% |
| Saturday | 66°F | Chance Rain Showers | 9 mph NW | 54% |
| Saturday Night | 46°F | Slight Chance Rain Showers | 10 mph NW | 17% |
| Sunday | 61°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph W | 17% |
| Sunday Night | 43°F | Partly Cloudy | 9 mph W | 14% |
| Monday | 60°F | Slight Chance Light Rain | 9 to 15 mph NW | 24% |
| Monday Night | 42°F | Slight Chance Light Rain | 13 mph W | 24% |
| Tuesday | 61°F | Slight Chance Light Rain then Mostly Sunny | 12 to 16 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Roslyn Harbor (40.811, -73.641). Updated through the day.
Growing snapshot for Roslyn Harbor
Last spring frost
Apr 2
First fall frost
Nov 12
Growing season
224 days
Hardiness zone
7b
More local growing data for Roslyn Harbor: nearby ZIP 11576 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Albertson
Atlantic Beach
Baldwin
Barnum Island
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Bay Park
Bayville
Bellerose
Bellmore
Bethpage
Brookville
Carle Place
Cedarhurst
Centre Island
Cove Neck
East Atlantic Beach
East Hills
East Massapequa
East Meadow
East Norwich
East Rockaway
East Williston
Elmont
Floral Park
Flower Hill
Franklin Square
Freeport
Garden City
Garden City Park
Garden City South
Climate data from the nearest NOAA station, Mineola, Ny (4.7 mi from Roslyn Harbor). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.