Sheboygan, WI 53081 Frost Dates
53081, near Sheboygan, WI: the frost window
Around 04/25 is the usual last spring frost, about 240 days away. Fall's first freeze usually shows up around 10/23, roughly 179 days after the last spring frost.
Zone 6a (-10 to -5°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 Sheboygan, not a forecast for this year.
Stretching the season past the first frost
Sheboygan's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Sheboygan's last frost
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Sheboygan against the rest of the dataset
About 179 days separate Sheboygan's last and first frost, putting it 25,153 of 40,283 ZIP codes nationally. Within WI, it ranks 31 of 860.
Learn more
Two guides worth reading on 53081: local microclimates, on what one yard in Sheboygan can differ from the 53081 normal, and zone vs. frost date, on why Zone 6a and Sheboygan's frost date answer different questions.