Drain, OR 97435 Frost Dates
97435, near Drain, OR: the frost window
Typically, the last spring freeze lands around 04/16, roughly 231 days out. Fall's first freeze usually shows up around 10/25, roughly 193 days after the last spring frost.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Drain, not a forecast for this year.
Stretching the season past the first frost
Drain's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Drain against the rest of the dataset
At roughly 193 frost-free days, Drain places 19,991 of 40,283 ZIP codes in this dataset. Within OR, it ranks 262 of 463.
Learn more
Two guides worth reading on 97435: the frost range, on how to read the range around Drain's dates instead of trusting one, and local microclimates, on what one yard in Drain can differ from the 97435 normal.