Roberts, WI 54023 Frost Dates
54023, near Roberts, WI: the frost window
Around 05/06 is the usual last spring frost, about 251 days away. Fall's first freeze usually shows up around 10/02, roughly 148 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Roberts in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Roberts'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.
The actual range around Roberts's last frost
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Roberts against the rest of the dataset
At roughly 148 frost-free days, Roberts places 35,725 of 40,283 ZIP codes in this dataset. Within WI, it ranks 608 of 860.
Learn more
Two guides worth reading on 54023: zone vs. frost date, on why Zone 4b and Roberts's frost date answer different questions, and the frost range, on how to read the range around Roberts's dates instead of trusting one.