South Glens Falls, NY 12803 Frost Dates
12803, near South Glens Falls, NY: the frost window
The last spring frost here typically falls around 05/17, about 262 days from today. Fall's first freeze usually shows up around 09/29, roughly 135 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 South Glens Falls, not a forecast for this year.
Stretching the season past the first frost
South Glens Falls'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.
The actual range around South Glens Falls's last frost
05/17 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 05/31 and only about 1 year in 10 sees frost after that.
South Glens Falls against the rest of the dataset
At roughly 135 frost-free days, South Glens Falls places 37,858 of 40,283 ZIP codes in this dataset. Within NY, it ranks 1,840 of 1,951.
Learn more
Two guides worth reading on 12803: the frost range, on how to read the range around South Glens Falls's dates instead of trusting one, and local microclimates, on what one yard in South Glens Falls can differ from the 12803 normal.