Park Falls, WI 54552 Frost Dates
When can you plant in Park Falls, WI?
Typically, the last spring freeze lands around 05/15, roughly 260 days out. The first fall frost typically arrives around 09/28, about 134 frost-free days later.
Zone 4a (-30 to -25°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 Park Falls, not a forecast for this year.
What to do before the first frost
About 4 weeks of growing season left in Park Falls before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/15 isn't a guarantee
05/15 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. 05/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Park Falls compares
About 134 days separate Park Falls's last and first frost, putting it 37,972 of 40,283 ZIP codes nationally. Within WI, it ranks 783 of 860.
Learn more
local microclimates covers what one yard in Park Falls can differ from the 54552 normal. zone vs. frost date covers why Zone 4a and Park Falls's frost date answer different questions.