Riverside, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riverside, a community in Suffolk County, New York.
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Northeast wind 5 to 8 mph.
7-day forecast for Riverside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 5 to 8 mph NE | 0% |
| Saturday | 68°F | Mostly Sunny | 7 to 10 mph E | 0% |
| Saturday Night | 55°F | Partly Cloudy | 2 to 6 mph SE | 1% |
| Sunday | 70°F | Showers And Thunderstorms | 3 to 10 mph SE | 76% |
| Sunday Night | 58°F | Showers And Thunderstorms | 6 to 12 mph SE | 90% |
| Monday | 68°F | Rain Showers Likely | 10 to 14 mph NE | 66% |
| Monday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 27% |
| Tuesday | 65°F | Chance Rain Showers | 18 mph NE | 25% |
| Tuesday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 18 mph NE | 25% |
| Wednesday | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 22 mph NE | 15% |
| Wednesday Night | 54°F | Chance Rain Showers | 17 to 21 mph NE | 32% |
| Thursday | 65°F | Chance Rain Showers | 21 mph NE | 35% |
| Thursday Night | 53°F | Chance Rain Showers | 14 to 17 mph NE | 37% |
| Friday | 67°F | Chance Rain Showers | 14 to 17 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for Riverside (40.905, -72.672). Updated through the day.
Growing snapshot for Riverside
Last spring frost
Apr 6
First fall frost
Nov 9
Growing season
215 days
Hardiness zone
7a
More local growing data for Riverside: nearby ZIP 11901 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Riverhead Rsch Farm, Ny (4.3 mi from Riverside). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.