North Great River, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for North Great River, a community in Suffolk County, New York.
This Afternoon
70°F
Mostly Sunny
Mostly sunny. High near 70, with temperatures falling to around 68 in the afternoon. East wind around 9 mph.
7-day forecast for North Great River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Sunny | 9 mph E | 0% |
| Tonight | 57°F | Mostly Cloudy | 5 to 8 mph SE | 2% |
| Sunday | 72°F | Rain Showers Likely then Rain | 6 to 13 mph SE | 79% |
| Sunday Night | 57°F | Rain then Rain Showers | 7 to 13 mph W | 80% |
| Monday | 69°F | Chance Rain Showers | 9 to 14 mph NE | 41% |
| Monday Night | 55°F | Chance Rain Showers | 7 to 13 mph NE | 28% |
| Tuesday | 66°F | Chance Rain Showers | 15 mph NE | 28% |
| Tuesday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 14 to 18 mph NE | 24% |
| Wednesday | 66°F | Slight Chance Rain Showers | 18 to 22 mph NE | 16% |
| Wednesday Night | 54°F | Slight Chance Rain Showers | 21 mph NE | 24% |
| Thursday | 66°F | Chance Rain Showers | 22 mph NE | 34% |
| Thursday Night | 53°F | Chance Rain Showers | 22 mph NE | 41% |
| Friday | 66°F | Chance Rain Showers | 23 mph N | 43% |
| Friday Night | 54°F | Chance Rain Showers | 21 mph N | 43% |
Forecast source: National Weather Service (api.weather.gov) for North Great River (40.756, -73.163). Updated through the day.
Growing snapshot for North Great River
Last spring frost
Apr 10
First fall frost
Nov 2
Growing season
207 days
Hardiness zone
7b
More local growing data for North Great River: nearby ZIP 11752 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Islip Li Macarthur Ap, Ny (4.5 mi from North Great River). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.