White City, UT 84070 Frost Dates
84070, near White City, UT: the frost window
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/12, roughly 159 days after the last spring frost.
White City 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
White City's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around White City's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/26 and only about 1 year in 10 sees frost after that.
White City against the rest of the dataset
About 159 days separate White City's last and first frost, putting it 32,638 of 40,283 ZIP codes nationally. Within UT, it ranks 165 of 344.
Learn more
Two guides worth reading on 84070: local microclimates, on what one yard in White City can differ from the 84070 normal, and zone vs. frost date, on why Zone 7b and White City's frost date answer different questions.