Niantic, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Niantic, a community in New London County, Connecticut.
Overnight
53°F
Patchy Fog
Patchy fog. Partly cloudy, with a low around 53. Southwest wind around 3 mph.
7-day forecast for Niantic
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Patchy Fog | 3 mph SW | 3% |
| Wednesday | 70°F | Patchy Fog then Sunny | 3 to 10 mph SW | 4% |
| Wednesday Night | 57°F | Partly Cloudy | 6 mph SW | 2% |
| Thursday | 71°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 10 mph SW | 19% |
| Thursday Night | 60°F | Rain Showers | 7 mph SW | 83% |
| Friday | 68°F | Showers And Thunderstorms | 5 to 8 mph S | 92% |
| Friday Night | 57°F | Showers And Thunderstorms | 6 mph SW | 92% |
| Saturday | 65°F | Rain Showers Likely | 6 to 9 mph NW | 69% |
| Saturday Night | 45°F | Chance Rain Showers | 8 mph NW | 34% |
| Sunday | 61°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph W | 19% |
| Sunday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 6 to 9 mph W | 16% |
| Monday | 60°F | Chance Light Rain | 9 to 15 mph NW | 30% |
| Monday Night | 41°F | Chance Light Rain | 9 to 13 mph W | 30% |
| Tuesday | 60°F | Chance Light Rain then Mostly Sunny | 13 to 17 mph W | 27% |
Forecast source: National Weather Service (api.weather.gov) for Niantic (41.317, -72.200). Updated through the day.
Growing snapshot for Niantic
Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
194 days
Hardiness zone
7a
More local growing data for Niantic: nearby ZIP 06357 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Baltic
Colchester
Conning Towers-Nautilus Park
Gales Ferry
Groton
Groton Long Point
Jewett City
Long Hill
Mashantucket
Mystic
New London
Noank
Norwich
Old Mystic
Oxoboxo River
Pawcatuck
Poquonock Bridge
Stonington
Waterford
Climate data from the nearest NOAA station, Groton New London Ap, Ct (8.8 mi from Niantic). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.