Park City, UT 84060 Frost Dates
84060, near Park City, UT: the frost window
The last spring frost here typically falls around 05/29, about 274 days from today. Fall's first freeze usually shows up around 09/25, roughly 117 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Park City in Zone 6a (-10 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
Park City's growing season runs out in roughly 4 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 Park City's last frost
05/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/14 and only about 1 year in 10 sees frost after that.
Park City against the rest of the dataset
At roughly 117 frost-free days, Park City places 39,241 of 40,283 ZIP codes in this dataset. Within UT, it ranks 306 of 344.
Learn more
Two guides worth reading on 84060: zone vs. frost date, on why Zone 6a and Park City's frost date answer different questions, and the frost range, on how to read the range around Park City's dates instead of trusting one.