LaGrange, WY 82081 Frost Dates
When can you plant in LaGrange, WY?
Typically, the last spring freeze lands around 05/21, roughly 266 days out. The first fall frost typically arrives around 09/21, about 121 frost-free days later.
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.
What to do before the first frost
About 3 weeks of growing season left in LaGrange before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around LaGrange's last frost
05/21 is the middle of 30 years of NOAA records, not a promise. Plant by 05/08 and you're betting against frost in roughly 9 years out of 10. 06/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How LaGrange compares
About 121 days separate LaGrange's last and first frost, putting it 39,039 of 40,283 ZIP codes nationally. Within WY, it ranks 94 of 192.
Learn more
zone vs. frost date covers why Zone 5a and LaGrange's frost date answer different questions. the frost range covers how to read the range around LaGrange's dates instead of trusting one.