Poplar, WI 54854 Frost Dates
Frost dates for Poplar, WI, ZIP 54854
Around 05/24 is the usual last spring frost, about 269 days away. The first fall frost typically arrives around 09/26, about 124 frost-free days later.
Zone 4b (-25 to -20°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 Poplar, not a forecast for this year.
What to do before the first frost
Zone 4b around Poplar has about 4 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.
Why 05/24 isn't a guarantee
05/24 is the middle of 30 years of NOAA records, not a promise. Plant by 05/08 and you're betting against frost in roughly 9 years out of 10. 06/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Poplar compares
At roughly 124 frost-free days, Poplar places 38,859 of 40,283 ZIP codes in this dataset. Within WI, it ranks 833 of 860.
Learn more
zone vs. frost date explains why Zone 4b and Poplar's frost date answer different questions, and the frost range explains how to read the range around Poplar's dates instead of trusting one.