Blanchardville, WI 53516 Frost Dates
53516, near Blanchardville, WI: the frost window
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/07, roughly 157 days after the last spring frost.
Blanchardville sits in USDA Zone 5a (-20 to -15°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
Blanchardville's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Blanchardville against the rest of the dataset
At roughly 157 frost-free days, Blanchardville places 33,398 of 40,283 ZIP codes in this dataset. Within WI, it ranks 398 of 860.
Learn more
Two guides worth reading on 53516: local microclimates, on what one yard in Blanchardville can differ from the 53516 normal, and zone vs. frost date, on why Zone 5a and Blanchardville's frost date answer different questions.