Greenwich, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greenwich, a community in Fairfield County, Connecticut.
Today
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 65 in the afternoon. Southwest wind around 8 mph.
7-day forecast for Greenwich
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Partly Sunny | 8 mph SW | 0% |
| Tonight | 52°F | Partly Cloudy | 5 mph SW | 0% |
| Wednesday | 72°F | Mostly Sunny | 3 to 8 mph SW | 0% |
| Wednesday Night | 56°F | Mostly Cloudy | 6 mph SW | 0% |
| Thursday | 72°F | Chance Rain Showers | 3 to 9 mph S | 31% |
| Thursday Night | 60°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 64% |
| Friday | 70°F | Showers And Thunderstorms | 6 mph S | 77% |
| Friday Night | 54°F | Showers And Thunderstorms then Light Rain Likely | 6 mph W | 77% |
| Saturday | 66°F | Light Rain Likely | 7 mph NW | 55% |
| Saturday Night | 46°F | Chance Light Rain | 7 mph NW | 29% |
| Sunday | 61°F | Slight Chance Light Rain then Mostly Sunny | 7 mph NW | 15% |
| Sunday Night | 44°F | Partly Cloudy then Slight Chance Light Rain | 6 mph NW | 19% |
| Monday | 59°F | Chance Light Rain | 7 to 12 mph NW | 31% |
| Monday Night | 42°F | Chance Light Rain | 12 mph NW | 28% |
Forecast source: National Weather Service (api.weather.gov) for Greenwich (41.028, -73.627). Updated through the day.
Growing snapshot for Greenwich
Last spring frost
Apr 12
First fall frost
Oct 31
Growing season
200 days
Hardiness zone
7a
More local growing data for Greenwich: nearby ZIP 06830 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Ball Pond
Bethel
Bigelow Corners
Bogus Hill
Botsford
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
Hawleyville
Indian Field
Inglenook
Kellogg Point
Climate data from the nearest NOAA station, Westchester Co Ap, Ny (4.8 mi from Greenwich). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.