Burns, WY 82054 Frost Dates
82054, near Burns, WY: the frost window
Typically, the last spring freeze lands around 05/14, roughly 259 days out. Fall's first freeze usually shows up around 09/26, roughly 133 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Burns in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Burns's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/27 and only about 1 year in 10 sees frost after that.
Burns against the rest of the dataset
Burns's growing season runs about 133 days, ranking 38,117 of 40,283 US ZIP codes measured here, longest to shortest. Within WY, it ranks 53 of 192.
Learn more
Two guides worth reading on 82054: local microclimates, on what one yard in Burns can differ from the 82054 normal, and zone vs. frost date, on why Zone 5b and Burns's frost date answer different questions.