Salt Lake City, UT 84132 Frost Dates
84132, near Salt Lake City, UT: the frost window
Around 05/07 is the usual last spring frost, about 252 days away. 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 Salt Lake City 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
Salt Lake City'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.
The actual range around Salt Lake City's last frost
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.
Salt Lake City against the rest of the dataset
At roughly 158 frost-free days, Salt Lake City places 32,848 of 40,283 ZIP codes in this dataset. Within UT, it ranks 170 of 344.
Learn more
Two guides worth reading on 84132: local microclimates, on what one yard in Salt Lake City can differ from the 84132 normal, and zone vs. frost date, on why Zone 7a and Salt Lake City's frost date answer different questions.