Cedar Grove, WI 53013 Frost Dates
53013, near Cedar Grove, WI: the frost window
Around 05/05 is the usual last spring frost, about 250 days away. Fall's first freeze usually shows up around 10/12, roughly 159 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Cedar Grove in Zone 5b (-15 to -10°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
Cedar Grove'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.
Why 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Cedar Grove against the rest of the dataset
At roughly 159 frost-free days, Cedar Grove places 32,674 of 40,283 ZIP codes in this dataset. Within WI, it ranks 353 of 860.
Learn more
Two guides worth reading on 53013: local microclimates, on what one yard in Cedar Grove can differ from the 53013 normal, and zone vs. frost date, on why Zone 5b and Cedar Grove's frost date answer different questions.