Warrens, WI 54666 Frost Dates
54666, near Warrens, WI: the frost window
Typically, the last spring freeze lands around 05/06, roughly 251 days out. Fall's first freeze usually shows up around 10/03, roughly 148 days after the last spring frost.
Zone 4b (-25 to -20°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 Warrens, not a forecast for this year.
Stretching the season past the first frost
Warrens'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.
How much risk comes with planting early here
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Warrens against the rest of the dataset
At roughly 148 frost-free days, Warrens places 35,780 of 40,283 ZIP codes in this dataset. Within WI, it ranks 623 of 860.
Learn more
Two guides worth reading on 54666: zone vs. frost date, on why Zone 4b and Warrens's frost date answer different questions, and the frost range, on how to read the range around Warrens's dates instead of trusting one.