West Valley City, UT 84044 Frost Dates
Frost dates for West Valley City, UT, ZIP 84044
The last spring frost here typically falls around 04/08, about 223 days from today. The first fall frost typically arrives around 10/31, about 204 frost-free days later.
The USDA Plant Hardiness Zone Map puts West Valley City in Zone 7b (5 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 7b around West Valley City has about 9 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.
Why 04/08 isn't a guarantee
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/17 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How West Valley City compares
West Valley City's growing season runs about 204 days, ranking 16,459 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 28 of 344.
Learn more
zone vs. frost date explains why Zone 7b and West Valley City's frost date answer different questions, and the frost range explains how to read the range around West Valley City's dates instead of trusting one.