Cottonwood Heights, UT 84093 Frost Dates
Frost dates for Cottonwood Heights, UT, ZIP 84093
The last spring frost here typically falls around 05/03, about 248 days from today. The first fall frost typically arrives around 10/12, about 159 frost-free days later.
Zone 7b (5 to 10°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 Cottonwood Heights, not a forecast for this year.
What to do before the first frost
Zone 7b around Cottonwood Heights has about 6 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.
The actual range around Cottonwood Heights's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cottonwood Heights compares
About 159 days separate Cottonwood Heights's last and first frost, putting it 32,586 of 40,283 ZIP codes nationally. Within UT, it ranks 163 of 344.
Learn more
zone vs. frost date explains why Zone 7b and Cottonwood Heights's frost date answer different questions, and the frost range explains how to read the range around Cottonwood Heights's dates instead of trusting one.