Culdesac, ID 83524 Frost Dates
83524, near Culdesac, ID: the frost window
The last spring frost here typically falls around 05/23, about 268 days from today. Fall's first freeze usually shows up around 09/25, roughly 121 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Culdesac 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
Culdesac's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/23 isn't a guarantee
05/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/19 and only about 1 year in 10 sees frost after that.
Culdesac against the rest of the dataset
Culdesac's growing season runs about 121 days, ranking 39,038 of 40,283 US ZIP codes measured here, longest to shortest. Within ID, it ranks 210 of 320.
Learn more
Two guides worth reading on 83524: the frost range, on how to read the range around Culdesac's dates instead of trusting one, and local microclimates, on what one yard in Culdesac can differ from the 83524 normal.