Appleton, WI 54915 Frost Dates
Appleton, WI: when does the frost end?
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.
Appleton 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
With roughly 6 weeks until Appleton's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Appleton's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Appleton against the rest of the dataset
Appleton's growing season runs about 154 days, ranking 34,204 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 457 of 860.
Learn more
Before leaning on 54915's figures: local microclimates explains what one yard in Appleton can differ from the 54915 normal, while zone vs. frost date explains why Zone 5b and Appleton's frost date answer different questions.