Niantic, CT Weather & Growing Conditions
Live forecast is briefly unavailable; the local growing information below is from NOAA climate normals.
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 Nov 4, 2026.