South Salt Lake, UT 84115 Frost Dates
When can you plant in South Salt Lake, UT?
Around 04/08 is the usual last spring frost, about 223 days away. The first fall frost typically arrives around 10/31, about 204 frost-free days later.
South Salt Lake sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 9 weeks of growing season left in South Salt Lake before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around South Salt Lake's last frost
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/17 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How South Salt Lake compares
South Salt Lake's growing season runs about 204 days, ranking 16,515 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 62 of 344.
Learn more
local microclimates covers what one yard in South Salt Lake can differ from the 84115 normal. zone vs. frost date covers why Zone 7b and South Salt Lake's frost date answer different questions.