Oakley, UT 84061 Frost Dates
84061, near Oakley, UT: the frost window
Typically, the last spring freeze lands around 06/11, roughly 287 days out. Fall's first freeze usually shows up around 09/12, roughly 92 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oakley in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Oakley's growing season runs out in roughly 2 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 06/11 isn't a guarantee
06/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/30 and only about 1 year in 10 sees frost after that.
Oakley against the rest of the dataset
About 92 days separate Oakley's last and first frost, putting it 39,886 of 40,283 ZIP codes nationally. Within UT, it ranks 341 of 344.
Learn more
Two guides worth reading on 84061: local microclimates, on what one yard in Oakley can differ from the 84061 normal, and zone vs. frost date, on why Zone 5b and Oakley's frost date answer different questions.