Germantown, WI 53022 Frost Dates
When can you plant in Germantown, WI?
The last spring frost here typically falls around 05/06, about 251 days from today. The first fall frost typically arrives around 10/08, about 154 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 Germantown, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Germantown 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
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/22 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Germantown compares
Germantown's growing season runs about 154 days, ranking 34,226 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 463 of 860.
Learn more
the frost range covers how to read the range around Germantown's dates instead of trusting one. local microclimates covers what one yard in Germantown can differ from the 53022 normal.