Shorewood, WI 53211 Frost Dates
Frost dates for Shorewood, WI, ZIP 53211
The last spring frost here typically falls around 04/26, about 241 days from today. The first fall frost typically arrives around 10/18, about 173 frost-free days later.
Zone 6a (-10 to -5°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 Shorewood, not a forecast for this year.
What to do before the first frost
Zone 6a around Shorewood has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Shorewood's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Shorewood compares
About 173 days separate Shorewood's last and first frost, putting it 27,812 of 40,283 ZIP codes nationally. Within WI, it ranks 107 of 860.
Learn more
zone vs. frost date explains why Zone 6a and Shorewood's frost date answer different questions, and the frost range explains how to read the range around Shorewood's dates instead of trusting one.