Thiensville, WI 53092 Frost Dates
Frost dates for Thiensville, WI, ZIP 53092
The last spring frost here typically falls around 04/23, about 238 days from today. The first fall frost typically arrives around 10/24, about 182 frost-free days later.
Zone 6a (-10 to -5°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 Thiensville, not a forecast for this year.
What to do before the first frost
Zone 6a around Thiensville has about 8 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 04/10 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Thiensville compares
About 182 days separate Thiensville's last and first frost, putting it 24,160 of 40,283 ZIP codes nationally. Within WI, it ranks 28 of 860.
Learn more
the frost range explains how to read the range around Thiensville's dates instead of trusting one, and local microclimates explains what one yard in Thiensville can differ from the 53092 normal.