Riverside, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riverside, a community in Suffolk County, New York.
This Afternoon
67°F
Partly Sunny
Partly sunny. High near 67, with temperatures falling to around 60 in the afternoon. Southwest wind around 7 mph.
7-day forecast for Riverside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Partly Sunny | 7 mph SW | 0% |
| Tonight | 53°F | Partly Cloudy | 5 mph SW | 3% |
| Wednesday | 70°F | Sunny | 3 to 10 mph SW | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 6 mph SW | 1% |
| Thursday | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 10 mph SW | 16% |
| Thursday Night | 59°F | Rain Showers | 8 mph SW | 84% |
| Friday | 67°F | Showers And Thunderstorms | 5 to 8 mph SW | 93% |
| Friday Night | 54°F | Showers And Thunderstorms | 5 mph SW | 93% |
| Saturday | 64°F | Rain Showers Likely | 5 to 8 mph NW | 64% |
| Saturday Night | 43°F | Slight Chance Rain Showers | 7 mph NW | 24% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 8 mph NW | 15% |
| Sunday Night | 40°F | Partly Cloudy | 5 to 9 mph W | 13% |
| Monday | 59°F | Chance Light Rain | 9 to 13 mph NW | 29% |
| Monday Night | 39°F | Chance Light Rain | 12 mph W | 29% |
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 Nov 4, 2026.