Champlain, NY 12921 Frost Dates
Champlain, NY: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/12, roughly 164 days after the last spring frost.
Zone 5a (-20 to -15°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 Champlain, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Champlain's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Champlain against the rest of the dataset
About 164 days separate Champlain's last and first frost, putting it 31,047 of 40,283 ZIP codes nationally. Within NY, it ranks 921 of 1,951.
Learn more
Before leaning on 12921's figures: local microclimates explains what one yard in Champlain can differ from the 12921 normal, while zone vs. frost date explains why Zone 5a and Champlain's frost date answer different questions.