Camanche, IA 52730 Frost Dates
52730, near Camanche, IA: the frost window
Around 04/22 is the usual last spring frost, about 237 days away. Fall's first freeze usually shows up around 10/16, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Camanche in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Camanche'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.
Why 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Camanche against the rest of the dataset
At roughly 175 frost-free days, Camanche places 26,891 of 40,283 ZIP codes in this dataset. Within IA, it ranks 174 of 1,042.
Learn more
Two guides worth reading on 52730: local microclimates, on what one yard in Camanche can differ from the 52730 normal, and zone vs. frost date, on why Zone 5b and Camanche's frost date answer different questions.