Southport, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southport, a community in Fairfield County, Connecticut.
This Afternoon
80°F
Sunny
Sunny. High near 80, with temperatures falling to around 77 in the afternoon. Northwest wind around 10 mph.
7-day forecast for Southport
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Sunny | 10 mph NW | 0% |
| Tonight | 53°F | Partly Cloudy | 5 to 12 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 6 to 9 mph E | 0% |
| Saturday Night | 57°F | Mostly Cloudy | 6 mph SE | 6% |
| Sunday | 68°F | Rain Showers | 6 to 12 mph SE | 87% |
| Sunday Night | 58°F | Rain Showers | 8 to 13 mph NE | 88% |
| Monday | 67°F | Chance Rain Showers | 14 mph NE | 47% |
| Monday Night | 53°F | Chance Rain Showers | 12 to 17 mph NE | 47% |
| Tuesday | 63°F | Chance Rain Showers | 16 to 20 mph NE | 47% |
| Tuesday Night | 52°F | Chance Rain Showers | 20 mph NE | 37% |
| Wednesday | 65°F | Chance Rain Showers | 21 mph NE | 29% |
| Wednesday Night | 52°F | Chance Rain Showers | 20 mph NE | 37% |
| Thursday | 65°F | Chance Rain Showers | 18 mph NE | 37% |
| Thursday Night | 53°F | Chance Rain Showers | 13 to 16 mph NE | 34% |
Forecast source: National Weather Service (api.weather.gov) for Southport (41.135, -73.287). Updated through the day.
Growing snapshot for Southport
Last spring frost
Apr 5
First fall frost
Nov 6
Growing season
216 days
Hardiness zone
7a
More local growing data for Southport: nearby ZIP 06890 weather · frost dates · planting calendar · Connecticut frost dates
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Climate data from the nearest NOAA station, Bridgeport Sikorsky Mem Ap, Ct (8.3 mi from Southport). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.