New Harmony, UT 84721 Frost Dates
When can you plant in New Harmony, UT?
The last spring frost here typically falls around 05/09, about 254 days from today. The first fall frost typically arrives around 10/11, about 155 frost-free days later.
Zone 6b (-5 to 0°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 New Harmony, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in New Harmony 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
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 and you're betting against frost in roughly 9 years out of 10. 05/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Harmony compares
About 155 days separate New Harmony's last and first frost, putting it 34,144 of 40,283 ZIP codes nationally. Within UT, it ranks 192 of 344.
Learn more
local microclimates covers what one yard in New Harmony can differ from the 84721 normal. zone vs. frost date covers why Zone 6b and New Harmony's frost date answer different questions.