Clinton, WI 53505 Frost Dates
53505, near Clinton, WI: the frost window
The last spring frost here typically falls around 04/28, about 243 days from today. Fall's first freeze usually shows up around 10/14, roughly 168 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 Clinton, not a forecast for this year.
Stretching the season past the first frost
Clinton's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Clinton's last frost
04/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Clinton against the rest of the dataset
About 168 days separate Clinton's last and first frost, putting it 29,721 of 40,283 ZIP codes nationally. Within WI, it ranks 145 of 860.
Learn more
Two guides worth reading on 53505: the frost range, on how to read the range around Clinton's dates instead of trusting one, and local microclimates, on what one yard in Clinton can differ from the 53505 normal.