Arimo, ID 83214 Frost Dates
83214, near Arimo, ID: the frost window
Typically, the last spring freeze lands around 05/23, roughly 268 days out. Fall's first freeze usually shows up around 09/24, roughly 121 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Arimo in Zone 6b (-5 to 0°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
Arimo'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.
The actual range around Arimo's last frost
05/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 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.
Arimo against the rest of the dataset
At roughly 121 frost-free days, Arimo places 39,042 of 40,283 ZIP codes in this dataset. Within ID, it ranks 213 of 320.
Learn more
Two guides worth reading on 83214: zone vs. frost date, on why Zone 6b and Arimo's frost date answer different questions, and the frost range, on how to read the range around Arimo's dates instead of trusting one.