Rhinelander, WI 54529 Frost Dates
Rhinelander, WI: when does the frost end?
Typically, the last spring freeze lands around 05/13, roughly 258 days out. Fall's first freeze usually shows up around 10/03, roughly 141 days after the last spring frost.
Rhinelander sits in USDA Zone 4a (-30 to -25°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 Rhinelander's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Rhinelander's last frost
05/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/27 and only about 1 year in 10 sees frost after that.
Rhinelander against the rest of the dataset
At roughly 141 frost-free days, Rhinelander places 36,891 of 40,283 ZIP codes in this dataset. Within WI, it ranks 702 of 860.
Learn more
Before leaning on 54529's figures: the frost range explains how to read the range around Rhinelander's dates instead of trusting one, while local microclimates explains what one yard in Rhinelander can differ from the 54529 normal.