Random Lake, WI 53075 Frost Dates
53075, near Random Lake, WI: the frost window
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/16, roughly 165 days after the last spring frost.
Random Lake sits in USDA Zone 5b (-15 to -10°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.
Stretching the season past the first frost
Random Lake's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Random Lake's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Random Lake against the rest of the dataset
About 165 days separate Random Lake's last and first frost, putting it 30,622 of 40,283 ZIP codes nationally. Within WI, it ranks 198 of 860.
Learn more
Two guides worth reading on 53075: local microclimates, on what one yard in Random Lake can differ from the 53075 normal, and zone vs. frost date, on why Zone 5b and Random Lake's frost date answer different questions.