Roberts, ID 83444 Frost Dates
83444, near Roberts, ID: the frost window
Typically, the last spring freeze lands around 05/09, roughly 254 days out. Fall's first freeze usually shows up around 10/05, roughly 148 days after the last spring frost.
Roberts sits in USDA Zone 5a (-20 to -15°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
Roberts's growing season runs out in roughly 5 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 Roberts's last frost
05/09 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 05/25 and only about 1 year in 10 sees frost after that.
Roberts against the rest of the dataset
About 148 days separate Roberts's last and first frost, putting it 35,775 of 40,283 ZIP codes nationally. Within ID, it ranks 127 of 320.
Learn more
Two guides worth reading on 83444: the frost range, on how to read the range around Roberts's dates instead of trusting one, and local microclimates, on what one yard in Roberts can differ from the 83444 normal.