Richville, NY 13639 Frost Dates
Richville, NY: when does the frost end?
Typically, the last spring freeze lands around 05/18, roughly 263 days out. Fall's first freeze usually shows up around 09/28, roughly 132 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Richville in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 4 weeks until Richville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/18 isn't a guarantee
05/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/02 and only about 1 year in 10 sees frost after that.
Richville against the rest of the dataset
At roughly 132 frost-free days, Richville places 38,226 of 40,283 ZIP codes in this dataset. Within NY, it ranks 1,897 of 1,951.
Learn more
Before leaning on 13639's figures: zone vs. frost date explains why Zone 4b and Richville's frost date answer different questions, while the frost range explains how to read the range around Richville's dates instead of trusting one.