Copenhagen, NY 13626 Frost Dates
13626, near Copenhagen, NY: the frost window
Typically, the last spring freeze lands around 05/02, roughly 247 days out. Fall's first freeze usually shows up around 10/13, roughly 163 days after the last spring frost.
Copenhagen sits in USDA Zone 4b (-25 to -20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Copenhagen's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Copenhagen's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Copenhagen against the rest of the dataset
Copenhagen's growing season runs about 163 days, ranking 31,497 of 40,283 US ZIP codes measured here, longest to shortest. Within NY, it ranks 989 of 1,951.
Learn more
Two guides worth reading on 13626: local microclimates, on what one yard in Copenhagen can differ from the 13626 normal, and zone vs. frost date, on why Zone 4b and Copenhagen's frost date answer different questions.