Mountain View, WY 82939 Frost Dates
When can you plant in Mountain View, WY?
Around 06/14 is the usual last spring frost, about 290 days away. The first fall frost typically arrives around 09/09, about 84 frost-free days later.
Mountain View sits in USDA Zone 5b (-15 to -10°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 2 weeks of growing season left in Mountain View before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Mountain View's last frost
06/14 is the middle of 30 years of NOAA records, not a promise. Plant by 05/31 and you're betting against frost in roughly 9 years out of 10. 07/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mountain View compares
About 84 days separate Mountain View's last and first frost, putting it 40,001 of 40,283 ZIP codes nationally. Within WY, it ranks 151 of 192.
Learn more
zone vs. frost date covers why Zone 5b and Mountain View's frost date answer different questions. the frost range covers how to read the range around Mountain View's dates instead of trusting one.