Winooski, VT 05446 Frost Dates
When can you plant in Winooski, VT?
Typically, the last spring freeze lands around 05/02, roughly 247 days out. The first fall frost typically arrives around 10/11, about 160 frost-free days later.
Winooski 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.
What to do before the first frost
About 6 weeks of growing season left in Winooski before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Winooski's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Winooski compares
Winooski's growing season runs about 160 days, ranking 32,282 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 42 of 330.
Learn more
the frost range covers how to read the range around Winooski's dates instead of trusting one. local microclimates covers what one yard in Winooski can differ from the 05446 normal.