Phillips, WI 54555 Frost Dates
54555, near Phillips, WI: the frost window
Around 05/23 is the usual last spring frost, about 268 days away. Fall's first freeze usually shows up around 09/23, roughly 124 days after the last spring frost.
Zone 4a (-30 to -25°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 Phillips, not a forecast for this year.
Stretching the season past the first frost
Phillips's growing season runs out in roughly 4 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
05/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/06 and only about 1 year in 10 sees frost after that.
Phillips against the rest of the dataset
At roughly 124 frost-free days, Phillips places 38,847 of 40,283 ZIP codes in this dataset. Within WI, it ranks 828 of 860.
Learn more
Two guides worth reading on 54555: zone vs. frost date, on why Zone 4a and Phillips's frost date answer different questions, and the frost range, on how to read the range around Phillips's dates instead of trusting one.