Black Creek, WI 54131 Frost Dates
When can you plant in Black Creek, WI?
Around 05/04 is the usual last spring frost, about 249 days away. The first fall frost typically arrives around 10/06, about 154 frost-free days later.
Black Creek 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.
What to do before the first frost
About 6 weeks of growing season left in Black Creek before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 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 Black Creek compares
About 154 days separate Black Creek's last and first frost, putting it 34,353 of 40,283 ZIP codes nationally. Within WI, it ranks 486 of 860.
Learn more
zone vs. frost date covers why Zone 5b and Black Creek's frost date answer different questions. the frost range covers how to read the range around Black Creek's dates instead of trusting one.