Amity, OR 97101 Frost Dates
97101, near Amity, OR: the frost window
Typically, the last spring freeze lands around 04/05, roughly 220 days out. Fall's first freeze usually shows up around 11/07, roughly 216 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Amity in Zone 8b (15 to 20°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
Amity's growing season runs out in roughly 10 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 Amity's last frost
04/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/27 and only about 1 year in 10 sees frost after that.
Amity against the rest of the dataset
About 216 days separate Amity's last and first frost, putting it 13,825 of 40,283 ZIP codes nationally. Within OR, it ranks 186 of 463.
Learn more
Two guides worth reading on 97101: zone vs. frost date, on why Zone 8b and Amity's frost date answer different questions, and the frost range, on how to read the range around Amity's dates instead of trusting one.