Rockland, ID 83212 Frost Dates
83212, near Rockland, 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.
Rockland sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Rockland'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 Rockland'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.
Rockland against the rest of the dataset
At roughly 121 frost-free days, Rockland places 39,050 of 40,283 ZIP codes in this dataset. Within ID, it ranks 214 of 320.
Learn more
Two guides worth reading on 83212: local microclimates, on what one yard in Rockland can differ from the 83212 normal, and zone vs. frost date, on why Zone 6a and Rockland's frost date answer different questions.