Oconto Falls, WI 54154 Frost Dates
When can you plant in Oconto Falls, WI?
The last spring frost here typically falls around 05/09, about 254 days from today. The first fall frost typically arrives around 10/06, about 150 frost-free days later.
The USDA Plant Hardiness Zone Map puts Oconto Falls 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 Oconto Falls before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/09 isn't a guarantee
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/25 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Oconto Falls compares
At roughly 150 frost-free days, Oconto Falls places 35,297 of 40,283 ZIP codes in this dataset. Within WI, it ranks 566 of 860.
Learn more
local microclimates covers what one yard in Oconto Falls can differ from the 54154 normal. zone vs. frost date covers why Zone 5a and Oconto Falls's frost date answer different questions.