Park City, UT 84068 Frost Dates
84068, 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.
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 Park City, not a forecast for this year.
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
Park City's growing season runs about 117 days, ranking 39,242 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 307 of 344.
Learn more
Two guides worth reading on 84068: the frost range, on how to read the range around Park City's dates instead of trusting one, and local microclimates, on what one yard in Park City can differ from the 84068 normal.