FrostDateCheck

Bangor, WI 54614 Frost Dates

Bangor, WI: when does the frost end?

Zone 4b

The last spring frost here typically falls around 05/09, about 254 days from today. Fall's first freeze usually shows up around 10/01, roughly 144 days after the last spring frost.

Zone 4b (-25 to -20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Bangor, not a forecast for this year.

Stretching the season past the first frost

With roughly 5 weeks until Bangor's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.

The actual range around Bangor's last frost

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.

Bangor against the rest of the dataset

Bangor's growing season runs about 144 days, ranking 36,385 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 669 of 860.

Learn more

Before leaning on 54614's figures: the frost range explains how to read the range around Bangor's dates instead of trusting one, while local microclimates explains what one yard in Bangor can differ from the 54614 normal.