Rockland, WI 54653 Frost Dates
Rockland, WI: when does the frost end?
Around 05/09 is the usual last spring frost, about 254 days away. Fall's first freeze usually shows up around 10/01, roughly 144 days after the last spring frost.
Rockland 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
With roughly 5 weeks until Rockland's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/09 isn't a guarantee
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/26 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.
Rockland against the rest of the dataset
At roughly 144 frost-free days, Rockland places 36,418 of 40,283 ZIP codes in this dataset. Within WI, it ranks 674 of 860.
Learn more
Before leaning on 54653's figures: zone vs. frost date explains why Zone 5a and Rockland's frost date answer different questions, while the frost range explains how to read the range around Rockland's dates instead of trusting one.