LaGrange, WY 82217 Frost Dates
82217, near LaGrange, WY: the frost window
Around 05/14 is the usual last spring frost, about 259 days away. Fall's first freeze usually shows up around 10/01, roughly 137 days after the last spring frost.
LaGrange sits in USDA Zone 5a (-20 to -15°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.
Stretching the season past the first frost
LaGrange's growing season runs out in roughly 5 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 05/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/29 and only about 1 year in 10 sees frost after that.
LaGrange against the rest of the dataset
About 137 days separate LaGrange's last and first frost, putting it 37,571 of 40,283 ZIP codes nationally. Within WY, it ranks 38 of 192.
Learn more
Two guides worth reading on 82217: local microclimates, on what one yard in LaGrange can differ from the 82217 normal, and zone vs. frost date, on why Zone 5a and LaGrange's frost date answer different questions.