Oakley, UT 84055 Frost Dates
Frost dates for Oakley, UT, ZIP 84055
The last spring frost here typically falls around 06/11, about 287 days from today. The first fall frost typically arrives around 09/12, about 92 frost-free days later.
The USDA Plant Hardiness Zone Map puts Oakley 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
Zone 5b around Oakley has about 2 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
06/11 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. 06/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Oakley compares
Oakley's growing season runs about 92 days, ranking 39,885 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 340 of 344.
Learn more
zone vs. frost date explains why Zone 5b and Oakley's frost date answer different questions, and the frost range explains how to read the range around Oakley's dates instead of trusting one.