Putnam, CT Weather & Growing Conditions
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 6 mph SW | 3% |
| Wednesday | 73°F | Sunny | 5 to 10 mph SW | 4% |
| Wednesday Night | 55°F | Partly Cloudy | 8 mph SW | 2% |
| Thursday | 73°F | Slight Chance Light Rain | 7 to 13 mph SW | 18% |
| Thursday Night | 62°F | Light Rain | 6 to 9 mph SW | 75% |
| Friday | 69°F | Rain | 7 mph S | 86% |
| Friday Night | 56°F | Rain | 6 mph SW | 85% |
| Saturday | 65°F | Light Rain Likely | 8 mph NW | 67% |
| Saturday Night | 41°F | Chance Light Rain | 7 mph NW | 37% |
| Sunday | 60°F | Slight Chance Light Rain then Mostly Sunny | 5 to 9 mph W | 21% |
| Sunday Night | 35°F | Partly Cloudy | 6 mph W | 8% |
| Monday | 58°F | Slight Chance Light Rain | 6 to 13 mph NW | 20% |
| Monday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 9 mph W | 19% |
| Tuesday | 58°F | Mostly Sunny | 9 to 14 mph SW | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Putnam, CT
Last spring frost
May 1
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
6b
Explore more for Putnam, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, W Thompson Lake, Ct (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.