Maiden Rock, WI 55026 Frost Dates
Frost dates for Maiden Rock, WI, ZIP 55026
Typically, the last spring freeze lands around 04/23, roughly 238 days out. The first fall frost typically arrives around 10/14, about 173 frost-free days later.
The USDA Plant Hardiness Zone Map puts Maiden Rock in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 4b around Maiden Rock 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.
How much risk comes with planting early here
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/08 and you're betting against frost in roughly 9 years out of 10. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Maiden Rock compares
Maiden Rock's growing season runs about 173 days, ranking 28,113 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 118 of 860.
Learn more
the frost range explains how to read the range around Maiden Rock's dates instead of trusting one, and local microclimates explains what one yard in Maiden Rock can differ from the 55026 normal.