Murray, UT 84090 Frost Dates
Frost dates for Murray, UT, ZIP 84090
Around 04/08 is the usual last spring frost, about 223 days away. The first fall frost typically arrives around 10/31, about 204 frost-free days later.
The USDA Plant Hardiness Zone Map puts Murray 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 Murray 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 Murray compares
Murray's growing season runs about 204 days, ranking 16,471 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 38 of 344.
Learn more
local microclimates explains what one yard in Murray can differ from the 84090 normal, and zone vs. frost date explains why Zone 7b and Murray's frost date answer different questions.