Salt Lake City, UT 84112 Frost Dates
Salt Lake City, UT: when does the frost end?
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.
Zone 7a (0 to 5°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 Salt Lake City, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Salt Lake City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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
Salt Lake City's growing season runs about 158 days, ranking 32,847 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 169 of 344.
Learn more
Before leaning on 84112's figures: zone vs. frost date explains why Zone 7a and Salt Lake City's frost date answer different questions, while the frost range explains how to read the range around Salt Lake City's dates instead of trusting one.