Mount Pleasant, UT 84647 Frost Dates
When can you plant in Mount Pleasant, UT?
Typically, the last spring freeze lands around 05/26, roughly 271 days out. The first fall frost typically arrives around 09/25, about 119 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mount Pleasant in Zone 5b (-15 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 4 weeks of growing season left in Mount Pleasant before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/26 is the middle of 30 years of NOAA records, not a promise. Plant by 05/10 and you're betting against frost in roughly 9 years out of 10. 06/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mount Pleasant compares
About 119 days separate Mount Pleasant's last and first frost, putting it 39,139 of 40,283 ZIP codes nationally. Within UT, it ranks 298 of 344.
Learn more
local microclimates covers what one yard in Mount Pleasant can differ from the 84647 normal. zone vs. frost date covers why Zone 5b and Mount Pleasant's frost date answer different questions.