Antigo, WI 54485 Frost Dates
When can you plant in Antigo, WI?
Typically, the last spring freeze lands around 05/14, roughly 259 days out. The first fall frost typically arrives around 09/30, about 139 frost-free days later.
Zone 4b (-25 to -20°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 Antigo, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in Antigo before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Antigo compares
Antigo's growing season runs about 139 days, ranking 37,220 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 728 of 860.
Learn more
local microclimates covers what one yard in Antigo can differ from the 54485 normal. zone vs. frost date covers why Zone 4b and Antigo's frost date answer different questions.