South Windham, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Windham, a community in Windham County, Connecticut.
Tonight
49°F
Partly Cloudy
Partly cloudy. Low around 49, with temperatures rising to around 51 overnight. North wind around 7 mph.
7-day forecast for South Windham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy | 7 mph N | 0% |
| Saturday | 68°F | Mostly Sunny | 1 to 5 mph NE | 0% |
| Saturday Night | 45°F | Mostly Cloudy | 3 mph SE | 2% |
| Sunday | 66°F | Rain Showers | 1 to 7 mph SE | 85% |
| Sunday Night | 55°F | Rain Showers | 3 to 9 mph E | 86% |
| Monday | 67°F | Chance Rain Showers | 7 to 12 mph NE | 30% |
| Monday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 17% |
| Tuesday | 63°F | Slight Chance Rain Showers | 13 mph NE | 16% |
| Tuesday Night | 47°F | Mostly Cloudy | 8 to 13 mph NE | 8% |
| Wednesday | 64°F | Partly Sunny | 13 to 18 mph NE | 12% |
| Wednesday Night | 47°F | Mostly Cloudy then Slight Chance Rain Showers | 9 to 15 mph NE | 24% |
| Thursday | 63°F | Chance Rain Showers | 14 to 17 mph NE | 28% |
| Thursday Night | 48°F | Chance Rain Showers | 9 to 14 mph NE | 32% |
| Friday | 66°F | Chance Rain Showers | 14 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov) for South Windham (41.684, -72.182). Updated through the day.
Growing snapshot for South Windham
Last spring frost
Apr 28
First fall frost
Oct 13
Growing season
167 days
Hardiness zone
6b
More local growing data for South Windham: nearby ZIP 06266 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Brooklyn
Danielson
Dayville
East Brooklyn
Lake Bungee
Lake Chaffee
Mechanicsville
Moosup
North Grosvenor Dale
Plainfield Village
Putnam
Quasset Lake
Quinebaug
South Woodstock
Wauregan
Willimantic
Witches Woods
Climate data from the nearest NOAA station, Willimantic Windham Ap, Ct (4.7 mi from South Windham). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.