Southport, CT Weather & Growing Conditions
Overnight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. Northeast wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Partly Cloudy | 10 mph NE | 0% |
| Saturday | 68°F | Mostly Sunny | 10 mph E | 0% |
| Saturday Night | 58°F | Mostly Cloudy | 5 to 8 mph E | 6% |
| Sunday | 68°F | Showers And Thunderstorms | 8 to 13 mph SE | 87% |
| Sunday Night | 58°F | Showers And Thunderstorms | 3 to 13 mph S | 88% |
| Monday | 67°F | Chance Rain Showers | 12 to 15 mph NE | 47% |
| Monday Night | 53°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Tuesday | 64°F | Chance Rain Showers | 17 mph NE | 26% |
| Tuesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 17 mph NE | 24% |
| Wednesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 20 mph NE | 15% |
| Wednesday Night | 52°F | Chance Rain Showers | 16 to 20 mph NE | 32% |
| Thursday | 63°F | Chance Rain Showers | 16 to 20 mph NE | 33% |
| Thursday Night | 52°F | Chance Rain Showers | 14 to 18 mph NE | 35% |
| Friday | 66°F | Chance Rain Showers | 14 to 17 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Southport, CT
Last spring frost
Apr 5
First fall frost
Nov 6
Growing season
216 days
Hardiness zone
7a
Explore more for Southport, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Bridgeport Sikorsky Mem Ap, Ct (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.