South Windham, CT Weather & Growing Conditions
This Afternoon
70°F
Mostly Sunny
Mostly sunny. High near 70, with temperatures falling to around 67 in the afternoon. East wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Sunny | 5 mph E | 0% |
| Tonight | 48°F | Partly Cloudy | 3 mph SE | 0% |
| Sunday | 64°F | Rain | 1 to 6 mph SE | 94% |
| Sunday Night | 51°F | Rain | 5 to 8 mph E | 94% |
| Monday | 66°F | Slight Chance Light Rain then Partly Sunny | 6 to 12 mph N | 23% |
| Monday Night | 46°F | Mostly Cloudy | 3 to 8 mph NE | 4% |
| Tuesday | 63°F | Mostly Cloudy | 8 to 12 mph NE | 6% |
| Tuesday Night | 46°F | Mostly Cloudy | 7 to 10 mph NE | 4% |
| Wednesday | 64°F | Partly Sunny | 12 to 17 mph NE | 3% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 16 mph NE | 24% |
| Thursday | 63°F | Chance Rain Showers | 15 to 18 mph NE | 32% |
| Thursday Night | 47°F | Chance Rain Showers | 17 mph N | 37% |
| Friday | 63°F | Chance Rain Showers | 14 to 17 mph N | 33% |
| Friday Night | 47°F | Chance Rain Showers | 16 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for South Windham, CT
Last spring frost
Apr 28
First fall frost
Oct 13
Growing season
167 days
Hardiness zone
6b
Explore more for South Windham, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Willimantic Windham Ap, Ct (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.