Ephraim, UT 84627 Frost Dates
When can you plant in Ephraim, UT?
The last spring frost here typically falls around 05/31, about 276 days from today. The first fall frost typically arrives around 09/21, about 114 frost-free days later.
Ephraim 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.
What to do before the first frost
About 3 weeks of growing season left in Ephraim before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/31 is the middle of 30 years of NOAA records, not a promise. Plant by 05/12 and you're betting against frost in roughly 9 years out of 10. 06/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ephraim compares
About 114 days separate Ephraim's last and first frost, putting it 39,352 of 40,283 ZIP codes nationally. Within UT, it ranks 311 of 344.
Learn more
zone vs. frost date covers why Zone 6a and Ephraim's frost date answer different questions. the frost range covers how to read the range around Ephraim's dates instead of trusting one.