Norwich, NY 13815 Frost Dates
13815, near Norwich, NY: the frost window
The last spring frost here typically falls around 05/13, about 258 days from today. Fall's first freeze usually shows up around 10/04, roughly 142 days after the last spring frost.
Norwich sits in USDA Zone 5b (-15 to -10°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
Norwich's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/27 and only about 1 year in 10 sees frost after that.
Norwich against the rest of the dataset
About 142 days separate Norwich's last and first frost, putting it 36,727 of 40,283 ZIP codes nationally. Within NY, it ranks 1,763 of 1,951.
Learn more
Two guides worth reading on 13815: local microclimates, on what one yard in Norwich can differ from the 13815 normal, and zone vs. frost date, on why Zone 5b and Norwich's frost date answer different questions.