Beloit, WI 53511 Frost Dates
When can you plant in Beloit, WI?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/12, about 162 frost-free days later.
Beloit 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 Beloit before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Beloit's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Beloit compares
At roughly 162 frost-free days, Beloit places 31,629 of 40,283 ZIP codes in this dataset. Within WI, it ranks 257 of 860.
Learn more
zone vs. frost date covers why Zone 5b and Beloit's frost date answer different questions. the frost range covers how to read the range around Beloit's dates instead of trusting one.