Coalville, UT 84017 Frost Dates
When can you plant in Coalville, UT?
Typically, the last spring freeze lands around 06/07, roughly 283 days out. The first fall frost typically arrives around 09/12, about 95 frost-free days later.
The USDA Plant Hardiness Zone Map puts Coalville 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 2 weeks of growing season left in Coalville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Coalville's last frost
06/07 is the middle of 30 years of NOAA records, not a promise. Plant by 05/21 and you're betting against frost in roughly 9 years out of 10. 06/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Coalville compares
At roughly 95 frost-free days, Coalville places 39,812 of 40,283 ZIP codes in this dataset. Within UT, it ranks 337 of 344.
Learn more
the frost range covers how to read the range around Coalville's dates instead of trusting one. local microclimates covers what one yard in Coalville can differ from the 84017 normal.