New London, CT Weather & Growing Conditions
Today
83°F
Mostly Sunny
Mostly sunny. High near 83, with temperatures falling to around 80 in the afternoon. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 mph SW | 0% |
| Tonight | 63°F | Mostly Cloudy | 3 mph N | 9% |
| Wednesday | 83°F | Mostly Sunny | 2 to 6 mph W | 7% |
| Wednesday Night | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph S | 19% |
| Thursday | 87°F | Mostly Sunny | 2 to 9 mph SW | 14% |
| Thursday Night | 73°F | Mostly Clear | 3 to 8 mph SW | 13% |
| Friday | 89°F | Sunny | 3 to 9 mph SW | 13% |
| Friday Night | 72°F | Slight Chance Showers And Thunderstorms | 2 to 7 mph SW | 19% |
| Saturday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph SW | 20% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph SW | 21% |
| Sunday | 88°F | Mostly Sunny | 2 to 8 mph W | 12% |
| Sunday Night | 71°F | Mostly Clear | 2 to 6 mph SW | 8% |
| Monday | 89°F | Sunny | 2 to 10 mph SW | 10% |
| Monday Night | 70°F | Partly Cloudy | 2 to 8 mph W | 11% |
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 Aug 4, 2026.