Edgerton, WY 82640 Frost Dates
When can you plant in Edgerton, WY?
Typically, the last spring freeze lands around 05/22, roughly 267 days out. The first fall frost typically arrives around 09/22, about 121 frost-free days later.
Edgerton 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 4 weeks of growing season left in Edgerton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/22 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. 06/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Edgerton compares
About 121 days separate Edgerton's last and first frost, putting it 39,058 of 40,283 ZIP codes nationally. Within WY, it ranks 99 of 192.
Learn more
the frost range covers how to read the range around Edgerton's dates instead of trusting one. local microclimates covers what one yard in Edgerton can differ from the 82640 normal.