Elk Mountain, WY 82324 Frost Dates
82324, near Elk Mountain, WY: the frost window
Around 06/12 is the usual last spring frost, about 288 days away. Fall's first freeze usually shows up around 09/07, roughly 83 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Elk Mountain in Zone 5a (-20 to -15°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
Elk Mountain's growing season runs out in roughly 1 week — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
06/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/30 and only about 1 year in 10 sees frost after that.
Elk Mountain against the rest of the dataset
About 83 days separate Elk Mountain's last and first frost, putting it 40,031 of 40,283 ZIP codes nationally. Within WY, it ranks 158 of 192.
Learn more
Two guides worth reading on 82324: local microclimates, on what one yard in Elk Mountain can differ from the 82324 normal, and zone vs. frost date, on why Zone 5a and Elk Mountain's frost date answer different questions.