Roy, UT 84067 Frost Dates
When can you plant in Roy, UT?
Around 04/22 is the usual last spring frost, about 237 days away. The first fall frost typically arrives around 10/22, about 180 frost-free days later.
Roy sits in USDA Zone 7a (0 to 5°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 8 weeks of growing season left in Roy before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Roy compares
About 180 days separate Roy's last and first frost, putting it 24,782 of 40,283 ZIP codes nationally. Within UT, it ranks 102 of 344.
Learn more
local microclimates covers what one yard in Roy can differ from the 84067 normal. zone vs. frost date covers why Zone 7a and Roy's frost date answer different questions.