Eagle River, WI 54568 Frost Dates
54568, near Eagle River, WI: the frost window
The last spring frost here typically falls around 05/23, about 268 days from today. Fall's first freeze usually shows up around 09/27, roughly 127 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Eagle River 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
Eagle River'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.
The actual range around Eagle River's last frost
05/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/07 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.
Eagle River against the rest of the dataset
About 127 days separate Eagle River's last and first frost, putting it 38,631 of 40,283 ZIP codes nationally. Within WI, it ranks 808 of 860.
Learn more
Two guides worth reading on 54568: the frost range, on how to read the range around Eagle River's dates instead of trusting one, and local microclimates, on what one yard in Eagle River can differ from the 54568 normal.