Highland, WI 53543 Frost Dates
Highland, WI: when does the frost end?
Around 05/03 is the usual last spring frost, about 248 days away. Fall's first freeze usually shows up around 10/07, roughly 157 days after the last spring frost.
Highland sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 6 weeks until Highland's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Highland's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 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.
Highland against the rest of the dataset
About 157 days separate Highland's last and first frost, putting it 33,396 of 40,283 ZIP codes nationally. Within WI, it ranks 397 of 860.
Learn more
Before leaning on 53543's figures: zone vs. frost date explains why Zone 5a and Highland's frost date answer different questions, while the frost range explains how to read the range around Highland's dates instead of trusting one.