Bellevue, WI 54308 Frost Dates
When can you plant in Bellevue, WI?
Around 05/06 is the usual last spring frost, about 251 days away. The first fall frost typically arrives around 10/12, about 158 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bellevue in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Bellevue before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/06 isn't a guarantee
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/22 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bellevue compares
Bellevue's growing season runs about 158 days, ranking 32,929 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 358 of 860.
Learn more
local microclimates covers what one yard in Bellevue can differ from the 54308 normal. zone vs. frost date covers why Zone 5b and Bellevue's frost date answer different questions.