Mountain View, WY 82944 Frost Dates
When can you plant in Mountain View, WY?
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 5a (-20 to -15°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
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.
How much risk comes with planting early here
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 40,002 of 40,283 ZIP codes in this dataset. Within WY, it ranks 152 of 192.
Learn more
local microclimates covers what one yard in Mountain View can differ from the 82944 normal. zone vs. frost date covers why Zone 5a and Mountain View's frost date answer different questions.