Ballard, UT 84039 Frost Dates
84039, near Ballard, UT: the frost window
The last spring frost here typically falls around 05/19, about 264 days from today. Fall's first freeze usually shows up around 10/02, roughly 135 days after the last spring frost.
Zone 5b (-15 to -10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Ballard, not a forecast for this year.
Stretching the season past the first frost
Ballard's growing season runs out in roughly 5 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 Ballard's last frost
05/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/15 and only about 1 year in 10 sees frost after that.
Ballard against the rest of the dataset
About 135 days separate Ballard's last and first frost, putting it 37,889 of 40,283 ZIP codes nationally. Within UT, it ranks 236 of 344.
Learn more
Two guides worth reading on 84039: local microclimates, on what one yard in Ballard can differ from the 84039 normal, and zone vs. frost date, on why Zone 5b and Ballard's frost date answer different questions.