Cedarburg, WI 53012 Frost Dates
When can you plant in Cedarburg, WI?
The last spring frost here typically falls around 04/23, about 238 days from today. The first fall frost typically arrives around 10/24, about 182 frost-free days later.
Zone 5b (-15 to -10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Cedarburg, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Cedarburg 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
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cedarburg compares
At roughly 182 frost-free days, Cedarburg places 24,098 of 40,283 ZIP codes in this dataset. Within WI, it ranks 26 of 860.
Learn more
local microclimates covers what one yard in Cedarburg can differ from the 53012 normal. zone vs. frost date covers why Zone 5b and Cedarburg's frost date answer different questions.