Southport, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southport, a community in Fairfield County, Connecticut.
Overnight
51°F
Patchy Fog
Patchy fog. Partly cloudy, with a low around 51. Southwest wind around 3 mph.
7-day forecast for Southport
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Patchy Fog | 3 mph SW | 3% |
| Wednesday | 71°F | Patchy Fog then Sunny | 3 to 12 mph SW | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 8 mph SW | 3% |
| Thursday | 70°F | Chance Rain Showers | 3 to 10 mph S | 33% |
| Thursday Night | 60°F | Rain Showers | 3 to 8 mph SW | 83% |
| Friday | 67°F | Showers And Thunderstorms | 3 to 7 mph S | 86% |
| Friday Night | 54°F | Showers And Thunderstorms | 5 mph W | 86% |
| Saturday | 65°F | Rain Showers Likely | 8 mph NW | 56% |
| Saturday Night | 42°F | Slight Chance Rain Showers | 9 mph NW | 21% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph W | 17% |
| Sunday Night | 39°F | Partly Cloudy | 8 mph W | 14% |
| Monday | 59°F | Chance Light Rain | 8 to 15 mph NW | 26% |
| Monday Night | 38°F | Chance Light Rain | 12 mph W | 26% |
| Tuesday | 60°F | Slight Chance Light Rain then Mostly Sunny | 12 to 15 mph W | 19% |
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
Nearby towns & communities
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Bogus Hill
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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, Bridgeport Sikorsky Mem Ap, Ct (8.3 mi from Southport). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.