Rockville, UT 84763 Frost Dates
When can you plant in Rockville, UT?
Around 04/13 is the usual last spring frost, about 228 days away. The first fall frost typically arrives around 11/02, about 202 frost-free days later.
The USDA Plant Hardiness Zone Map puts Rockville in Zone 8a (10 to 15°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 Rockville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/13 isn't a guarantee
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rockville compares
At roughly 202 frost-free days, Rockville places 17,365 of 40,283 ZIP codes in this dataset. Within UT, it ranks 67 of 344.
Learn more
local microclimates covers what one yard in Rockville can differ from the 84763 normal. zone vs. frost date covers why Zone 8a and Rockville's frost date answer different questions.