Jackson, WI 53037 Frost Dates
Jackson, WI: when does the frost end?
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/15, roughly 167 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Jackson in Zone 5b (-15 to -10°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 7 weeks until Jackson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Jackson's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Jackson against the rest of the dataset
At roughly 167 frost-free days, Jackson places 29,926 of 40,283 ZIP codes in this dataset. Within WI, it ranks 158 of 860.
Learn more
Before leaning on 53037's figures: local microclimates explains what one yard in Jackson can differ from the 53037 normal, while zone vs. frost date explains why Zone 5b and Jackson's frost date answer different questions.