Aurora, UT 84620 Frost Dates
Aurora, UT: when does the frost end?
The last spring frost here typically falls around 05/21, about 266 days from today. Fall's first freeze usually shows up around 09/24, roughly 125 days after the last spring frost.
Aurora sits in USDA Zone 6a (-10 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 4 weeks until Aurora's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Aurora's last frost
05/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/07 and only about 1 year in 10 sees frost after that.
Aurora against the rest of the dataset
Aurora's growing season runs about 125 days, ranking 38,769 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 262 of 344.
Learn more
Before leaning on 84620's figures: zone vs. frost date explains why Zone 6a and Aurora's frost date answer different questions, while the frost range explains how to read the range around Aurora's dates instead of trusting one.