Lake Geneva, WI 53147 Frost Dates
Frost dates for Lake Geneva, WI, ZIP 53147
Around 04/25 is the usual last spring frost, about 240 days away. The first fall frost typically arrives around 10/21, about 179 frost-free days later.
The USDA Plant Hardiness Zone Map puts Lake Geneva in Zone 5b (-15 to -10°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 5b around Lake Geneva 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.
The actual range around Lake Geneva's last frost
04/25 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. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lake Geneva compares
Lake Geneva's growing season runs about 179 days, ranking 25,252 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 35 of 860.
Learn more
the frost range explains how to read the range around Lake Geneva's dates instead of trusting one, and local microclimates explains what one yard in Lake Geneva can differ from the 53147 normal.