Fox Lake, WI 53933 Frost Dates
Frost dates for Fox Lake, WI, ZIP 53933
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/11, about 163 frost-free days later.
Fox Lake sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 5a around Fox Lake 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.
How much risk comes with planting early here
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 Fox Lake compares
About 163 days separate Fox Lake's last and first frost, putting it 31,419 of 40,283 ZIP codes nationally. Within WI, it ranks 235 of 860.
Learn more
the frost range explains how to read the range around Fox Lake's dates instead of trusting one, and local microclimates explains what one yard in Fox Lake can differ from the 53933 normal.