South Salt Lake, UT 84105 Frost Dates
South Salt Lake, UT: when does the frost end?
Around 04/08 is the usual last spring frost, about 223 days away. Fall's first freeze usually shows up around 10/31, roughly 204 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts South Salt Lake in Zone 7b (5 to 10°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
With roughly 9 weeks until South Salt Lake's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
South Salt Lake against the rest of the dataset
About 204 days separate South Salt Lake's last and first frost, putting it 16,514 of 40,283 ZIP codes nationally. Within UT, it ranks 61 of 344.
Learn more
Before leaning on 84105's figures: the frost range explains how to read the range around South Salt Lake's dates instead of trusting one, while local microclimates explains what one yard in South Salt Lake can differ from the 84105 normal.