Herriman, UT 84096 Frost Dates
Frost dates for Herriman, UT, ZIP 84096
The last spring frost here typically falls around 05/02, about 247 days from today. The first fall frost typically arrives around 10/16, about 165 frost-free days later.
The USDA Plant Hardiness Zone Map puts Herriman in Zone 7a (0 to 5°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 7a around Herriman has about 7 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
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Herriman compares
At roughly 165 frost-free days, Herriman places 30,502 of 40,283 ZIP codes in this dataset. Within UT, it ranks 141 of 344.
Learn more
local microclimates explains what one yard in Herriman can differ from the 84096 normal, and zone vs. frost date explains why Zone 7a and Herriman's frost date answer different questions.