Crandon, WI 54566 Frost Dates
Crandon, WI: when does the frost end?
Around 05/19 is the usual last spring frost, about 264 days away. Fall's first freeze usually shows up around 09/29, roughly 131 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Crandon in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 5 weeks until Crandon's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/19 isn't a guarantee
05/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/02 and only about 1 year in 10 sees frost after that.
Crandon against the rest of the dataset
About 131 days separate Crandon's last and first frost, putting it 38,290 of 40,283 ZIP codes nationally. Within WI, it ranks 796 of 860.
Learn more
Before leaning on 54566's figures: the frost range explains how to read the range around Crandon's dates instead of trusting one, while local microclimates explains what one yard in Crandon can differ from the 54566 normal.