Black Creek, WI 54931 Frost Dates
When can you plant in Black Creek, WI?
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/06, about 154 frost-free days later.
The USDA Plant Hardiness Zone Map puts Black Creek in Zone 5a (-20 to -15°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 Black Creek before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
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 34,356 of 40,283 ZIP codes nationally. Within WI, it ranks 489 of 860.
Learn more
zone vs. frost date covers why Zone 5a 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.