Randolph, WI 53956 Frost Dates
Frost dates for Randolph, WI, ZIP 53956
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/11, about 163 frost-free days later.
Zone 5a (-20 to -15°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 Randolph, not a forecast for this year.
What to do before the first frost
Zone 5a around Randolph has about 6 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 05/01 isn't a guarantee
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Randolph compares
At roughly 163 frost-free days, Randolph places 31,412 of 40,283 ZIP codes in this dataset. Within WI, it ranks 233 of 860.
Learn more
the frost range explains how to read the range around Randolph's dates instead of trusting one, and local microclimates explains what one yard in Randolph can differ from the 53956 normal.