Mountain View, WY 82933 Frost Dates
Frost dates for Mountain View, WY, ZIP 82933
The last spring frost here typically falls around 06/14, about 290 days from today. The first fall frost typically arrives around 09/09, about 84 frost-free days later.
Zone 5b (-15 to -10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Mountain View, not a forecast for this year.
What to do before the first frost
Zone 5b around Mountain View has about 2 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 06/14 isn't a guarantee
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
At roughly 84 frost-free days, Mountain View places 39,999 of 40,283 ZIP codes in this dataset. Within WY, it ranks 149 of 192.
Learn more
local microclimates explains what one yard in Mountain View can differ from the 82933 normal, and zone vs. frost date explains why Zone 5b and Mountain View's frost date answer different questions.