Rockland, ID 83271 Frost Dates
Frost dates for Rockland, ID, ZIP 83271
Around 05/04 is the usual last spring frost, about 249 days away. The first fall frost typically arrives around 10/08, about 155 frost-free days later.
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.
What to do before the first frost
Zone 6a around Rockland has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Rockland's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rockland compares
At roughly 155 frost-free days, Rockland places 34,134 of 40,283 ZIP codes in this dataset. Within ID, it ranks 97 of 320.
Learn more
the frost range explains how to read the range around Rockland's dates instead of trusting one, and local microclimates explains what one yard in Rockland can differ from the 83271 normal.