Helper, UT 84526 Frost Dates
When can you plant in Helper, UT?
Around 06/13 is the usual last spring frost, about 289 days away. The first fall frost typically arrives around 09/17, about 94 frost-free days later.
The USDA Plant Hardiness Zone Map puts Helper in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 3 weeks of growing season left in Helper before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Helper's last frost
06/13 is the middle of 30 years of NOAA records, not a promise. Plant by 05/29 and you're betting against frost in roughly 9 years out of 10. 06/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Helper compares
At roughly 94 frost-free days, Helper places 39,830 of 40,283 ZIP codes in this dataset. Within UT, it ranks 338 of 344.
Learn more
zone vs. frost date covers why Zone 6a and Helper's frost date answer different questions. the frost range covers how to read the range around Helper's dates instead of trusting one.