Draper, UT 84020 Frost Dates
84020, near Draper, UT: the frost window
Around 05/03 is the usual last spring frost, about 248 days away. Fall's first freeze usually shows up around 10/12, roughly 159 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Draper in Zone 7a (0 to 5°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
Draper's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
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 05/26 and only about 1 year in 10 sees frost after that.
Draper against the rest of the dataset
About 159 days separate Draper's last and first frost, putting it 32,582 of 40,283 ZIP codes nationally. Within UT, it ranks 160 of 344.
Learn more
Two guides worth reading on 84020: zone vs. frost date, on why Zone 7a and Draper's frost date answer different questions, and the frost range, on how to read the range around Draper's dates instead of trusting one.