Suring, WI 54174 Frost Dates
Suring, WI: when does the frost end?
Around 05/14 is the usual last spring frost, about 259 days away. Fall's first freeze usually shows up around 10/01, roughly 139 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 Suring, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Suring's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Suring's last frost
05/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/29 and only about 1 year in 10 sees frost after that.
Suring against the rest of the dataset
Suring's growing season runs about 139 days, ranking 37,265 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 734 of 860.
Learn more
Before leaning on 54174's figures: the frost range explains how to read the range around Suring's dates instead of trusting one, while local microclimates explains what one yard in Suring can differ from the 54174 normal.