Flanders, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flanders, a community in Suffolk County, New York.
This Afternoon
68°F
Sunny
Sunny. High near 68, with temperatures falling to around 62 in the afternoon. Southwest wind around 7 mph.
7-day forecast for Flanders
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Sunny | 7 mph SW | 0% |
| Tonight | 58°F | Mostly Cloudy | 6 mph SW | 2% |
| Thursday | 69°F | Partly Sunny | 6 to 12 mph SW | 12% |
| Thursday Night | 60°F | Light Rain | 6 to 10 mph SW | 82% |
| Friday | 67°F | Rain | 6 mph SW | 84% |
| Friday Night | 54°F | Rain | 3 mph SW | 82% |
| Saturday | 64°F | Chance Light Rain | 3 to 8 mph W | 25% |
| Saturday Night | 44°F | Slight Chance Light Rain | 8 to 13 mph W | 24% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 13 mph NW | 24% |
| Sunday Night | 42°F | Partly Cloudy | 9 to 13 mph W | 2% |
| Monday | 58°F | Sunny | 12 to 15 mph W | 11% |
| Monday Night | 41°F | Mostly Clear | 8 to 12 mph W | 11% |
| Tuesday | 60°F | Sunny | 13 mph W | 2% |
| Tuesday Night | 42°F | Mostly Clear | 9 mph W | 2% |
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 Nov 5, 2026.