Dutch John, UT 84023 Frost Dates
When can you plant in Dutch John, UT?
Typically, the last spring freeze lands around 05/26, roughly 271 days out. The first fall frost typically arrives around 09/23, about 120 frost-free days later.
Dutch John sits in USDA Zone 5b (-15 to -10°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 4 weeks of growing season left in Dutch John before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Dutch John's last frost
05/26 is the middle of 30 years of NOAA records, not a promise. Plant by 05/09 and you're betting against frost in roughly 9 years out of 10. 06/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dutch John compares
Dutch John's growing season runs about 120 days, ranking 39,109 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 294 of 344.
Learn more
local microclimates covers what one yard in Dutch John can differ from the 84023 normal. zone vs. frost date covers why Zone 5b and Dutch John's frost date answer different questions.