Mineral Point, WI 53565 Frost Dates
Mineral Point, WI: when does the frost end?
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/07, roughly 157 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mineral Point in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 6 weeks until Mineral Point'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
05/03 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.
Mineral Point against the rest of the dataset
About 157 days separate Mineral Point's last and first frost, putting it 33,326 of 40,283 ZIP codes nationally. Within WI, it ranks 390 of 860.
Learn more
Before leaning on 53565's figures: zone vs. frost date explains why Zone 5a and Mineral Point's frost date answer different questions, while the frost range explains how to read the range around Mineral Point's dates instead of trusting one.