Topstone, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Topstone, a community in Fairfield County, Connecticut.
Today
82°F
Mostly Sunny
Mostly sunny, with a high near 82. Northwest wind around 3 mph.
7-day forecast for Topstone
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Mostly Sunny | 3 mph NW | 0% |
| Tonight | 62°F | Mostly Cloudy | 3 mph S | 1% |
| Wednesday | 82°F | Partly Sunny | 2 to 6 mph SW | 12% |
| Wednesday Night | 68°F | Chance Rain Showers | 5 mph S | 25% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 2 to 8 mph SW | 55% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph SW | 49% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 45% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 5 mph W | 42% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph W | 37% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph W | 37% |
| Sunday | 86°F | Mostly Sunny | 3 to 7 mph W | 12% |
| Sunday Night | 69°F | Mostly Clear | 6 mph SW | 11% |
| Monday | 88°F | Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph W | 16% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Topstone (41.296, -73.447). Updated through the day.
Growing snapshot for Topstone
Last spring frost
May 1
First fall frost
Oct 14
Growing season
166 days
Hardiness zone
6b
More local growing data for Topstone: nearby ZIP 06896 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
Greenwich
Hawleyville
Indian Field
Inglenook
Climate data from the nearest NOAA station, Danbury Muni Ap, Ct (6.5 mi from Topstone). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.