Murray, UT 84147 Frost Dates
84147, near Murray, UT: the frost window
Around 04/08 is the usual last spring frost, about 223 days away. Fall's first freeze usually shows up around 10/31, roughly 204 days after the last spring frost.
Murray sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Murray's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/08 isn't a guarantee
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Murray against the rest of the dataset
At roughly 204 frost-free days, Murray places 16,486 of 40,283 ZIP codes in this dataset. Within UT, it ranks 53 of 344.
Learn more
Two guides worth reading on 84147: zone vs. frost date, on why Zone 7b and Murray's frost date answer different questions, and the frost range, on how to read the range around Murray's dates instead of trusting one.