Southold, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southold, a community in Suffolk County, New York.
Tonight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. Southwest wind around 6 mph.
7-day forecast for Southold
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Partly Cloudy | 6 mph SW | 3% |
| Wednesday | 69°F | Sunny | 5 to 9 mph SW | 3% |
| Wednesday Night | 58°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 12 mph SW | 17% |
| Thursday Night | 60°F | Rain Showers | 9 mph SW | 84% |
| Friday | 66°F | Showers And Thunderstorms | 8 mph S | 93% |
| Friday Night | 57°F | Showers And Thunderstorms | 6 mph SW | 93% |
| Saturday | 63°F | Rain Showers Likely | 9 mph NW | 67% |
| Saturday Night | 49°F | Chance Rain Showers | 7 to 10 mph NW | 28% |
| Sunday | 59°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph W | 19% |
| Sunday Night | 48°F | Partly Cloudy then Slight Chance Light Rain | 8 to 12 mph W | 15% |
| Monday | 58°F | Chance Light Rain | 13 to 16 mph NW | 32% |
| Monday Night | 47°F | Chance Light Rain | 15 mph W | 32% |
| Tuesday | 59°F | Chance Light Rain then Mostly Sunny | 16 mph W | 25% |
Forecast source: National Weather Service (api.weather.gov) for Southold (41.065, -72.430). Updated through the day.
Growing snapshot for Southold
Last spring frost
Apr 19
First fall frost
Nov 1
Growing season
196 days
Hardiness zone
7b
More local growing data for Southold: nearby ZIP 11971 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Mattituck, Ny (6.8 mi from Southold). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.