Layton, UT 84040 Frost Dates
Frost dates for Layton, UT, ZIP 84040
The last spring frost here typically falls around 04/29, about 244 days from today. The first fall frost typically arrives around 10/20, about 172 frost-free days later.
The USDA Plant Hardiness Zone Map puts Layton 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 Layton has about 8 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
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Layton compares
Layton's growing season runs about 172 days, ranking 28,126 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 130 of 344.
Learn more
zone vs. frost date explains why Zone 7a and Layton's frost date answer different questions, and the frost range explains how to read the range around Layton's dates instead of trusting one.