Gresham, WI 54948 Frost Dates
54948, near Gresham, 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.
Gresham 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.
Stretching the season past the first frost
Gresham'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.
Why 05/04 isn't a guarantee
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.
Gresham against the rest of the dataset
At roughly 154 frost-free days, Gresham places 34,406 of 40,283 ZIP codes in this dataset. Within WI, it ranks 496 of 860.
Learn more
Two guides worth reading on 54948: the frost range, on how to read the range around Gresham's dates instead of trusting one, and local microclimates, on what one yard in Gresham can differ from the 54948 normal.