Bloomington, WI 53804 Frost Dates
When can you plant in Bloomington, WI?
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/11, about 166 frost-free days later.
Bloomington sits in USDA Zone 5a (-20 to -15°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 Bloomington before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Bloomington's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bloomington compares
About 166 days separate Bloomington's last and first frost, putting it 30,421 of 40,283 ZIP codes nationally. Within WI, it ranks 185 of 860.
Learn more
the frost range covers how to read the range around Bloomington's dates instead of trusting one. local microclimates covers what one yard in Bloomington can differ from the 53804 normal.