Vesper, WI 54404 Frost Dates
Frost dates for Vesper, WI, ZIP 54404
Typically, the last spring freeze lands around 05/08, roughly 253 days out. The first fall frost typically arrives around 10/01, about 145 frost-free days later.
Vesper sits in USDA Zone 4b (-25 to -20°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.
What to do before the first frost
Zone 4b around Vesper has about 5 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.
How much risk comes with planting early here
05/08 is the middle of 30 years of NOAA records, not a promise. Plant by 04/26 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Vesper compares
Vesper's growing season runs about 145 days, ranking 36,262 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 661 of 860.
Learn more
the frost range explains how to read the range around Vesper's dates instead of trusting one, and local microclimates explains what one yard in Vesper can differ from the 54404 normal.