Cambria, WI 53923 Frost Dates
53923, near Cambria, WI: the frost window
Typically, the last spring freeze lands around 05/06, roughly 251 days out. Fall's first freeze usually shows up around 10/02, roughly 150 days after the last spring frost.
Cambria 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
Cambria's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/06 isn't a guarantee
05/06 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 05/22 and only about 1 year in 10 sees frost after that.
Cambria against the rest of the dataset
About 150 days separate Cambria's last and first frost, putting it 35,351 of 40,283 ZIP codes nationally. Within WI, it ranks 574 of 860.
Learn more
Two guides worth reading on 53923: local microclimates, on what one yard in Cambria can differ from the 53923 normal, and zone vs. frost date, on why Zone 5a and Cambria's frost date answer different questions.