Crandon, WI 54465 Frost Dates
54465, near Crandon, WI: the frost window
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.
Crandon sits in USDA Zone 4b (-25 to -20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Crandon's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
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
Crandon's growing season runs about 131 days, ranking 38,286 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 792 of 860.
Learn more
Two guides worth reading on 54465: local microclimates, on what one yard in Crandon can differ from the 54465 normal, and zone vs. frost date, on why Zone 4b and Crandon's frost date answer different questions.