Shoshoni, WY 82642 Frost Dates
Shoshoni, WY: when does the frost end?
The last spring frost here typically falls around 05/07, about 252 days from today. Fall's first freeze usually shows up around 10/03, roughly 145 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Shoshoni in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 5 weeks until Shoshoni's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/07 isn't a guarantee
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Shoshoni against the rest of the dataset
At roughly 145 frost-free days, Shoshoni places 36,264 of 40,283 ZIP codes in this dataset. Within WY, it ranks 11 of 192.
Learn more
Before leaning on 82642's figures: local microclimates explains what one yard in Shoshoni can differ from the 82642 normal, while zone vs. frost date explains why Zone 5a and Shoshoni's frost date answer different questions.