Kewaunee, WI 54216 Frost Dates
Kewaunee, WI: when does the frost end?
Around 05/01 is the usual last spring frost, about 246 days away. Fall's first freeze usually shows up around 10/18, roughly 168 days after the last spring frost.
Zone 5b (-15 to -10°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 Kewaunee, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Kewaunee's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Kewaunee against the rest of the dataset
Kewaunee's growing season runs about 168 days, ranking 29,716 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 142 of 860.
Learn more
Before leaning on 54216's figures: zone vs. frost date explains why Zone 5b and Kewaunee's frost date answer different questions, while the frost range explains how to read the range around Kewaunee's dates instead of trusting one.