Swanton, VT 05485 Frost Dates
When can you plant in Swanton, VT?
The last spring frost here typically falls around 05/01, about 246 days from today. The first fall frost typically arrives around 10/12, about 161 frost-free days later.
The USDA Plant Hardiness Zone Map puts Swanton in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Swanton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Swanton compares
Swanton's growing season runs about 161 days, ranking 32,062 of 40,283 US ZIP codes measured here, longest to shortest. Within VT, it ranks 37 of 330.
Learn more
the frost range covers how to read the range around Swanton's dates instead of trusting one. local microclimates covers what one yard in Swanton can differ from the 05485 normal.