FrostDateCheck

Shoshone, ID 83352 Frost Dates

83352, near Shoshone, ID: the frost window

Zone 6a

Around 04/24 is the usual last spring frost, about 239 days away. Fall's first freeze usually shows up around 10/16, roughly 173 days after the last spring frost.

The USDA Plant Hardiness Zone Map puts Shoshone in Zone 6a (-10 to -5°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

Shoshone's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.

Why 04/24 isn't a guarantee

04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.

Shoshone against the rest of the dataset

At roughly 173 frost-free days, Shoshone places 27,948 of 40,283 ZIP codes in this dataset. Within ID, it ranks 53 of 320.

Learn more

Two guides worth reading on 83352: the frost range, on how to read the range around Shoshone's dates instead of trusting one, and local microclimates, on what one yard in Shoshone can differ from the 83352 normal.