Fishers Island, NY Weather & Growing Conditions
Today
80°F
Mostly Sunny
Mostly sunny. High near 80, with temperatures falling to around 76 in the afternoon. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Mostly Sunny | 6 mph SW | 0% |
| Tonight | 63°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 6 mph N | 15% |
| Wednesday | 80°F | Partly Sunny | 2 to 7 mph W | 11% |
| Wednesday Night | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph SW | 16% |
| Thursday | 83°F | Mostly Sunny | 6 to 13 mph SW | 11% |
| Thursday Night | 73°F | Partly Cloudy | 8 to 13 mph SW | 11% |
| Friday | 84°F | Sunny | 8 to 13 mph SW | 7% |
| Friday Night | 72°F | Slight Chance Showers And Thunderstorms | 6 to 13 mph SW | 18% |
| Saturday | 77°F | Mostly Sunny | 6 to 9 mph SW | 14% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph SW | 21% |
| Sunday | 78°F | Mostly Sunny | 6 to 10 mph SW | 11% |
| Sunday Night | 72°F | Mostly Clear | 6 to 10 mph SW | 6% |
| Monday | 79°F | Sunny | 6 to 13 mph SW | 8% |
| Monday Night | 70°F | Mostly Clear | 7 to 12 mph W | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fishers Island, NY
Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
194 days
Hardiness zone
7a
Explore more for Fishers Island, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Groton New London Ap, Ct (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.