Flanders, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flanders, a community in Suffolk County, New York.
Overnight
60°F
Mostly Cloudy
Mostly cloudy, with a low around 60. North wind around 2 mph.
7-day forecast for Flanders
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Mostly Cloudy | 2 mph N | 0% |
| Tuesday | 81°F | Mostly Sunny | 5 mph NE | 0% |
| Tuesday Night | 65°F | Mostly Cloudy | 3 mph E | 14% |
| Wednesday | 82°F | Partly Sunny | 2 to 6 mph SE | 12% |
| Wednesday Night | 72°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph S | 17% |
| Thursday | 85°F | Mostly Sunny | 5 to 10 mph SW | 10% |
| Thursday Night | 73°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 to 9 mph SW | 15% |
| Friday | 86°F | Sunny | 6 to 9 mph SW | 10% |
| Friday Night | 72°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 18% |
| Saturday | 86°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 9 mph SW | 15% |
| Saturday Night | 72°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 22% |
| Sunday | 86°F | Mostly Sunny | 5 to 8 mph SW | 14% |
| Sunday Night | 72°F | Mostly Clear | 5 to 8 mph SW | 8% |
| Monday | 88°F | Sunny | 5 to 10 mph SW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Flanders (40.889, -72.604). Updated through the day.
Growing snapshot for Flanders
Last spring frost
Apr 6
First fall frost
Nov 9
Growing season
215 days
Hardiness zone
7a
More local growing data for Flanders: nearby ZIP 11931 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Riverhead Rsch Farm, Ny (5.3 mi from Flanders). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.