New London, CT Weather & Growing Conditions
Overnight
52°F
Mostly Cloudy
Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. North wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 8 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 9 mph E | 0% |
| Saturday Night | 52°F | Partly Cloudy | 6 mph E | 0% |
| Sunday | 68°F | Rain | 5 to 9 mph SE | 90% |
| Sunday Night | 53°F | Rain | 6 to 10 mph E | 90% |
| Monday | 68°F | Chance Light Rain then Mostly Cloudy | 7 to 12 mph NE | 39% |
| Monday Night | 49°F | Mostly Cloudy | 5 to 9 mph NE | 6% |
| Tuesday | 65°F | Mostly Cloudy | 9 to 14 mph NE | 9% |
| Tuesday Night | 49°F | Mostly Cloudy | 9 to 14 mph NE | 6% |
| Wednesday | 66°F | Partly Sunny | 14 to 20 mph NE | 6% |
| Wednesday Night | 49°F | Chance Rain Showers | 16 mph NE | 26% |
| Thursday | 66°F | Chance Rain Showers | 17 to 21 mph NE | 33% |
| Thursday Night | 49°F | Chance Rain Showers | 13 to 17 mph NE | 36% |
| Friday | 66°F | Chance Rain Showers | 20 mph N | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New London, CT
Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
194 days
Hardiness zone
7a
Explore more for New London, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Groton New London Ap, Ct (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.