Clyman, WI 53016 Frost Dates
Clyman, WI: when does the frost end?
Around 04/28 is the usual last spring frost, about 243 days away. Fall's first freeze usually shows up around 10/12, roughly 167 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 Clyman, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Clyman's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/28 isn't a guarantee
04/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Clyman against the rest of the dataset
About 167 days separate Clyman's last and first frost, putting it 30,156 of 40,283 ZIP codes nationally. Within WI, it ranks 169 of 860.
Learn more
Before leaning on 53016's figures: local microclimates explains what one yard in Clyman can differ from the 53016 normal, while zone vs. frost date explains why Zone 5a and Clyman's frost date answer different questions.