Rochester, WI 53167 Frost Dates
Rochester, WI: when does the frost end?
The last spring frost here typically falls around 05/05, about 250 days from today. Fall's first freeze usually shows up around 10/10, roughly 156 days after the last spring frost.
Rochester 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 Rochester's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/23 and only about 1 year in 10 sees frost after that.
Rochester against the rest of the dataset
Rochester's growing season runs about 156 days, ranking 33,616 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 419 of 860.
Learn more
Before leaning on 53167's figures: the frost range explains how to read the range around Rochester's dates instead of trusting one, while local microclimates explains what one yard in Rochester can differ from the 53167 normal.