Bluff, UT 86547 Frost Dates
When can you plant in Bluff, UT?
The last spring frost here typically falls around 05/03, about 248 days from today. The first fall frost typically arrives around 10/17, about 163 frost-free days later.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Bluff, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Bluff 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
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bluff compares
Bluff's growing season runs about 163 days, ranking 31,537 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 147 of 344.
Learn more
local microclimates covers what one yard in Bluff can differ from the 86547 normal. zone vs. frost date covers why Zone 7a and Bluff's frost date answer different questions.