Riverhead, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riverhead, a community in Suffolk County, New York.
Today
82°F
Mostly Sunny
Mostly sunny, with a high near 82. Northeast wind 2 to 6 mph.
7-day forecast for Riverhead
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Mostly Sunny | 2 to 6 mph NE | 0% |
| Tonight | 64°F | Mostly Cloudy | 3 mph NE | 12% |
| Wednesday | 83°F | Partly Sunny | 2 to 6 mph SE | 10% |
| Wednesday Night | 71°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph S | 17% |
| Thursday | 87°F | Mostly Sunny | 5 to 12 mph SW | 10% |
| Thursday Night | 73°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 to 10 mph SW | 17% |
| Friday | 88°F | Sunny | 6 to 9 mph SW | 13% |
| Friday Night | 72°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph SW | 20% |
| Saturday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph SW | 18% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 23% |
| Sunday | 87°F | Mostly Sunny | 5 to 8 mph SW | 14% |
| Sunday Night | 72°F | Mostly Clear | 5 to 8 mph SW | 9% |
| Monday | 89°F | Sunny | 5 to 10 mph W | 7% |
| Monday Night | 72°F | Slight Chance Rain Showers | 6 to 9 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Riverhead (40.951, -72.676). Updated through the day.
Growing snapshot for Riverhead
Last spring frost
Apr 6
First fall frost
Nov 9
Growing season
215 days
Hardiness zone
7a
More local growing data for Riverhead: nearby ZIP 11901 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Amagansett
Amityville
Aquebogue
Asharoken
Babylon
Baiting Hollow
Bay Shore
Bayport
Baywood
Belle Terre
Bellport
Blue Point
Bohemia
Brentwood
Bridgehampton
Brightwaters
Brookhaven
Calverton
Captree
Center Moriches
Centereach
Centerport
Central Islip
Cold Spring Harbor
Commack
Copiague
Coram
Cutchogue
Deer Park
Dering Harbor
Climate data from the nearest NOAA station, Riverhead Rsch Farm, Ny (4.3 mi from Riverhead). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.