Joseph, UT 84739 Frost Dates
Joseph, UT: when does the frost end?
Around 05/24 is the usual last spring frost, about 269 days away. Fall's first freeze usually shows up around 09/25, roughly 123 days after the last spring frost.
Joseph 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 Joseph's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/10 and only about 1 year in 10 sees frost after that.
Joseph against the rest of the dataset
About 123 days separate Joseph's last and first frost, putting it 38,922 of 40,283 ZIP codes nationally. Within UT, it ranks 277 of 344.
Learn more
Before leaning on 84739's figures: local microclimates explains what one yard in Joseph can differ from the 84739 normal, while zone vs. frost date explains why Zone 6a and Joseph's frost date answer different questions.