Dubois, WY 82512 Frost Dates
When can you plant in Dubois, WY?
The last spring frost here typically falls around 06/01, about 277 days from today. The first fall frost typically arrives around 09/14, about 104 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 Dubois, not a forecast for this year.
What to do before the first frost
About 2 weeks of growing season left in Dubois before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Dubois's last frost
06/01 is the middle of 30 years of NOAA records, not a promise. Plant by 05/17 and you're betting against frost in roughly 9 years out of 10. 06/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dubois compares
About 104 days separate Dubois's last and first frost, putting it 39,612 of 40,283 ZIP codes nationally. Within WY, it ranks 136 of 192.
Learn more
local microclimates covers what one yard in Dubois can differ from the 82512 normal. zone vs. frost date covers why Zone 5a and Dubois's frost date answer different questions.