Niantic, CT Weather & Growing Conditions
Today
68°F
Mostly Sunny
Mostly sunny. High near 68, with temperatures falling to around 66 in the afternoon. East wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Mostly Sunny | 9 mph E | 0% |
| Tonight | 52°F | Partly Cloudy | 3 to 7 mph SE | 0% |
| Sunday | 68°F | Rain | 5 to 9 mph SE | 91% |
| Sunday Night | 54°F | Rain | 6 to 10 mph E | 91% |
| Monday | 68°F | Chance Light Rain | 7 to 12 mph NE | 39% |
| Monday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Tuesday | 65°F | Mostly Cloudy | 14 mph NE | 11% |
| Tuesday Night | 51°F | Mostly Cloudy | 10 to 16 mph NE | 7% |
| Wednesday | 65°F | Partly Sunny | 17 to 22 mph NE | 7% |
| Wednesday Night | 51°F | Chance Rain Showers | 17 to 21 mph NE | 26% |
| Thursday | 64°F | Chance Rain Showers | 21 to 24 mph NE | 33% |
| Thursday Night | 51°F | Chance Rain Showers | 15 to 21 mph NE | 36% |
| Friday | 65°F | Chance Rain Showers | 20 to 23 mph N | 34% |
| Friday Night | 52°F | Chance Rain Showers | 16 to 20 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Niantic, CT
Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
194 days
Hardiness zone
7a
Explore more for Niantic, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Groton New London Ap, Ct (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.