Muskego, WI 53150 Frost Dates
Muskego, WI: when does the frost end?
The last spring frost here typically falls around 05/03, about 248 days from today. Fall's first freeze usually shows up around 10/14, roughly 162 days after the last spring frost.
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 Muskego, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Muskego's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Muskego's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Muskego against the rest of the dataset
Muskego's growing season runs about 162 days, ranking 31,644 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 259 of 860.
Learn more
Before leaning on 53150's figures: zone vs. frost date explains why Zone 5b and Muskego's frost date answer different questions, while the frost range explains how to read the range around Muskego's dates instead of trusting one.