Putnam, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Putnam, a community in Windham County, Connecticut.
Tonight
45°F
Partly Cloudy
Partly cloudy, with a low around 45. Southeast wind 0 to 3 mph.
7-day forecast for Putnam
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Partly Cloudy | 0 to 3 mph SE | 1% |
| Sunday | 62°F | Rain Showers | 0 to 6 mph SE | 100% |
| Sunday Night | 53°F | Rain Showers | 3 to 10 mph NE | 97% |
| Monday | 67°F | Patchy Fog then Partly Sunny | 7 to 12 mph NE | 12% |
| Monday Night | 47°F | Mostly Cloudy | 3 to 7 mph NE | 1% |
| Tuesday | 63°F | Partly Sunny | 7 to 10 mph NE | 4% |
| Tuesday Night | 46°F | Mostly Cloudy | 6 to 10 mph NE | 2% |
| Wednesday | 64°F | Partly Sunny | 10 to 16 mph NE | 3% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 12 mph NE | 17% |
| Thursday | 64°F | Chance Rain Showers | 13 to 17 mph NE | 27% |
| Thursday Night | 47°F | Chance Rain Showers | 13 to 16 mph NE | 37% |
| Friday | 64°F | Chance Rain Showers | 15 to 18 mph NE | 41% |
| Friday Night | 48°F | Chance Rain Showers | 16 mph N | 41% |
| Saturday | 67°F | Chance Rain Showers | 13 to 16 mph N | 37% |
Forecast source: National Weather Service (api.weather.gov) for Putnam (41.917, -71.911). Updated through the day.
Growing snapshot for Putnam
Last spring frost
May 1
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
6b
More local growing data for Putnam: nearby ZIP 06260 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
Quasset Lake
Quinebaug
South Windham
South Woodstock
Wauregan
Willimantic
Witches Woods
Climate data from the nearest NOAA station, W Thompson Lake, Ct (3 mi from Putnam). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.