Garden City, ID 83703 Frost Dates
Garden City, ID: when does the frost end?
Typically, the last spring freeze lands around 05/17, roughly 262 days out. Fall's first freeze usually shows up around 10/12, roughly 147 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Garden City in Zone 7a (0 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
With roughly 6 weeks until Garden City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/17 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 06/10 and only about 1 year in 10 sees frost after that.
Garden City against the rest of the dataset
Garden City's growing season runs about 147 days, ranking 35,863 of 40,283 US ZIP codes measured here, longest to shortest. Within ID, it ranks 131 of 320.
Learn more
Before leaning on 83703's figures: the frost range explains how to read the range around Garden City's dates instead of trusting one, while local microclimates explains what one yard in Garden City can differ from the 83703 normal.