Washington Terrace, UT 84405 Frost Dates
Washington Terrace, UT: when does the frost end?
Typically, the last spring freeze lands around 04/22, roughly 237 days out. Fall's first freeze usually shows up around 10/22, roughly 180 days after the last spring frost.
Washington Terrace sits in USDA Zone 7a (0 to 5°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 8 weeks until Washington Terrace's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Washington Terrace against the rest of the dataset
At roughly 180 frost-free days, Washington Terrace places 24,823 of 40,283 ZIP codes in this dataset. Within UT, it ranks 106 of 344.
Learn more
Before leaning on 84405's figures: the frost range explains how to read the range around Washington Terrace's dates instead of trusting one, while local microclimates explains what one yard in Washington Terrace can differ from the 84405 normal.