Wonewoc, WI 53968 Frost Dates
Wonewoc, WI: when does the frost end?
Around 05/12 is the usual last spring frost, about 257 days away. Fall's first freeze usually shows up around 09/29, roughly 138 days after the last spring frost.
Zone 5a (-20 to -15°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 Wonewoc, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Wonewoc's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Wonewoc's last frost
05/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/26 and only about 1 year in 10 sees frost after that.
Wonewoc against the rest of the dataset
About 138 days separate Wonewoc's last and first frost, putting it 37,430 of 40,283 ZIP codes nationally. Within WI, it ranks 746 of 860.
Learn more
Before leaning on 53968's figures: the frost range explains how to read the range around Wonewoc's dates instead of trusting one, while local microclimates explains what one yard in Wonewoc can differ from the 53968 normal.