Big Falls, WI 54926 Frost Dates
54926, near Big Falls, WI: the frost window
Typically, the last spring freeze lands around 05/04, roughly 249 days out. Fall's first freeze usually shows up around 10/06, roughly 154 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Big Falls in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Big Falls's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Big Falls against the rest of the dataset
About 154 days separate Big Falls's last and first frost, putting it 34,480 of 40,283 ZIP codes nationally. Within WI, it ranks 502 of 860.
Learn more
Two guides worth reading on 54926: the frost range, on how to read the range around Big Falls's dates instead of trusting one, and local microclimates, on what one yard in Big Falls can differ from the 54926 normal.