West Valley City, UT 84128 Frost Dates
West Valley City, UT: when does the frost end?
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.
West Valley 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
With roughly 9 weeks until West Valley City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around West Valley City's last frost
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.
West Valley City against the rest of the dataset
About 204 days separate West Valley City's last and first frost, putting it 16,461 of 40,283 ZIP codes nationally. Within UT, it ranks 30 of 344.
Learn more
Before leaning on 84128's figures: local microclimates explains what one yard in West Valley City can differ from the 84128 normal, while zone vs. frost date explains why Zone 7b and West Valley City's frost date answer different questions.