Scio, OR 97374 Frost Dates
Scio, OR: when does the frost end?
Typically, the last spring freeze lands around 03/14, roughly 198 days out. Fall's first freeze usually shows up around 11/18, roughly 248 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Scio 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
With roughly 12 weeks until Scio's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Scio's last frost
03/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/14 and only about 1 year in 10 sees frost after that.
Scio against the rest of the dataset
Scio's growing season runs about 248 days, ranking 7,718 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 83 of 463.
Learn more
Before leaning on 97374's figures: local microclimates explains what one yard in Scio can differ from the 97374 normal, while zone vs. frost date explains why Zone 8b and Scio's frost date answer different questions.