Southold, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southold, a community in Suffolk County, New York.
Today
68°F
Mostly Sunny
Mostly sunny. High near 68, with temperatures falling to around 66 in the afternoon. East wind 7 to 13 mph.
7-day forecast for Southold
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Mostly Sunny | 7 to 13 mph E | 0% |
| Tonight | 58°F | Partly Cloudy | 6 mph SE | 1% |
| Sunday | 70°F | Rain | 6 to 9 mph SE | 87% |
| Sunday Night | 58°F | Rain | 6 to 13 mph NE | 87% |
| Monday | 68°F | Chance Light Rain | 8 to 15 mph NE | 45% |
| Monday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 14 mph NE | 17% |
| Tuesday | 65°F | Slight Chance Rain Showers | 17 mph NE | 22% |
| Tuesday Night | 55°F | Slight Chance Rain Showers | 15 to 21 mph NE | 20% |
| Wednesday | 66°F | Slight Chance Rain Showers then Partly Sunny | 22 to 25 mph NE | 15% |
| Wednesday Night | 56°F | Chance Rain Showers | 25 mph NE | 31% |
| Thursday | 66°F | Chance Rain Showers | 28 mph NE | 34% |
| Thursday Night | 55°F | Chance Rain Showers | 20 to 25 mph NE | 39% |
| Friday | 66°F | Chance Rain Showers | 22 to 25 mph N | 35% |
| Friday Night | 56°F | Chance Rain Showers | 21 to 24 mph N | 36% |
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 Sep 19, 2026.