Sail Harbor, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sail Harbor, a community in Fairfield County, Connecticut.
Tonight
51°F
Partly Cloudy
Partly cloudy. Low around 51, with temperatures rising to around 53 overnight. North wind around 7 mph.
7-day forecast for Sail Harbor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Partly Cloudy | 7 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 2 to 6 mph E | 0% |
| Saturday Night | 54°F | Mostly Cloudy | 2 to 6 mph SE | 14% |
| Sunday | 65°F | Showers And Thunderstorms | 5 to 9 mph SE | 93% |
| Sunday Night | 55°F | Showers And Thunderstorms | 2 to 8 mph NW | 93% |
| Monday | 66°F | Chance Rain Showers | 6 to 9 mph N | 31% |
| Monday Night | 50°F | Slight Chance Rain Showers | 5 to 9 mph NE | 23% |
| Tuesday | 61°F | Chance Rain Showers | 7 to 10 mph NE | 25% |
| Tuesday Night | 48°F | Mostly Cloudy | 7 to 10 mph NE | 11% |
| Wednesday | 62°F | Partly Sunny then Slight Chance Rain Showers | 12 mph NE | 15% |
| Wednesday Night | 48°F | Chance Rain Showers | 8 to 13 mph NE | 26% |
| Thursday | 61°F | Chance Rain Showers | 9 to 13 mph NE | 28% |
| Thursday Night | 49°F | Chance Rain Showers | 7 to 10 mph NE | 35% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 33% |
Forecast source: National Weather Service (api.weather.gov) for Sail Harbor (41.524, -73.464). Updated through the day.
Growing snapshot for Sail Harbor
Last spring frost
Apr 20
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6b
More local growing data for Sail Harbor: nearby ZIP 06812 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
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Bogus Hill
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Branchville
Bridgeport
Brookfield Center
Candlewood Isle
Candlewood Knolls
Candlewood Lake Club
Candlewood Orchards
Candlewood Shores
Cannondale
Chimney Point
Coleytown
Compo
Cos Cob
Danbury
Daniels Farm
Darien Downtown
Dodgingtown
East Village
Fairfield University
Georgetown
Greens Farms
Greenwich
Hawleyville
Indian Field
Inglenook
Climate data from the nearest NOAA station, Danbury, Ct (6.5 mi from Sail Harbor). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.