Salt Lake City, UT 84104 Frost Dates
When can you plant in Salt Lake City, UT?
Typically, the last spring freeze lands around 04/08, roughly 223 days out. The first fall frost typically arrives around 10/31, about 204 frost-free days later.
The USDA Plant Hardiness Zone Map puts Salt Lake City in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 9 weeks of growing season left in Salt Lake City before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Salt Lake City'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 Salt Lake City compares
About 204 days separate Salt Lake City's last and first frost, putting it 16,443 of 40,283 ZIP codes nationally. Within UT, it ranks 23 of 344.
Learn more
local microclimates covers what one yard in Salt Lake City can differ from the 84104 normal. zone vs. frost date covers why Zone 7b and Salt Lake City's frost date answer different questions.