Mayville, WI 53050 Frost Dates
Frost dates for Mayville, WI, ZIP 53050
The last spring frost here typically falls around 05/01, about 246 days from today. The first fall frost typically arrives around 10/10, about 158 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mayville in Zone 5a (-20 to -15°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 5a around Mayville 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. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mayville compares
At roughly 158 frost-free days, Mayville places 32,967 of 40,283 ZIP codes in this dataset. Within WI, it ranks 360 of 860.
Learn more
zone vs. frost date explains why Zone 5a and Mayville's frost date answer different questions, and the frost range explains how to read the range around Mayville's dates instead of trusting one.