Emigration Canyon, UT 84158 Frost Dates
84158, near Emigration Canyon, UT: the frost window
The last spring frost here typically falls around 05/07, about 252 days from today. Fall's first freeze usually shows up around 10/14, roughly 158 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Emigration Canyon 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
Emigration Canyon'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.
How much risk comes with planting early here
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/27 and only about 1 year in 10 sees frost after that.
Emigration Canyon against the rest of the dataset
At roughly 158 frost-free days, Emigration Canyon places 33,029 of 40,283 ZIP codes in this dataset. Within UT, it ranks 180 of 344.
Learn more
Two guides worth reading on 84158: zone vs. frost date, on why Zone 7a and Emigration Canyon's frost date answer different questions, and the frost range, on how to read the range around Emigration Canyon's dates instead of trusting one.