Old Brookville, NY 11545 Frost Dates
Frost dates for Old Brookville, NY, ZIP 11545
Around 04/02 is the usual last spring frost, about 217 days away. The first fall frost typically arrives around 11/12, about 224 frost-free days later.
Old Brookville sits in USDA Zone 7b (5 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.
What to do before the first frost
Zone 7b around Old Brookville has about 11 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/18 and you're betting against frost in roughly 9 years out of 10. 04/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Old Brookville compares
At roughly 224 frost-free days, Old Brookville places 11,899 of 40,283 ZIP codes in this dataset. Within NY, it ranks 178 of 1,951.
Learn more
the frost range explains how to read the range around Old Brookville's dates instead of trusting one, and local microclimates explains what one yard in Old Brookville can differ from the 11545 normal.