Hulett, WY 82714 Frost Dates
When can you plant in Hulett, WY?
Around 05/23 is the usual last spring frost, about 268 days away. The first fall frost typically arrives around 09/20, about 118 frost-free days later.
Zone 4b (-25 to -20°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 Hulett, not a forecast for this year.
What to do before the first frost
About 3 weeks of growing season left in Hulett before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/23 isn't a guarantee
05/23 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. 06/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hulett compares
About 118 days separate Hulett's last and first frost, putting it 39,232 of 40,283 ZIP codes nationally. Within WY, it ranks 109 of 192.
Learn more
zone vs. frost date covers why Zone 4b and Hulett's frost date answer different questions. the frost range covers how to read the range around Hulett's dates instead of trusting one.