Milford, CT 06461 Frost Dates
06461, near Milford, CT: the frost window
The last spring frost here typically falls around 04/05, about 220 days from today. Fall's first freeze usually shows up around 11/06, roughly 216 days after the last spring frost.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Milford, not a forecast for this year.
Stretching the season past the first frost
Milford's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/05 isn't a guarantee
04/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Milford against the rest of the dataset
Milford's growing season runs about 216 days, ranking 13,716 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 23 of 391.
Learn more
Two guides worth reading on 06461: the frost range, on how to read the range around Milford's dates instead of trusting one, and local microclimates, on what one yard in Milford can differ from the 06461 normal.