Arlington, OR 99356 Frost Dates
Arlington, OR: when does the frost end?
Around 04/06 is the usual last spring frost, about 221 days away. Fall's first freeze usually shows up around 10/21, roughly 196 days after the last spring frost.
Arlington sits in USDA Zone 7a (0 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.
Stretching the season past the first frost
With roughly 8 weeks until Arlington's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Arlington's last frost
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
Arlington against the rest of the dataset
At roughly 196 frost-free days, Arlington places 19,057 of 40,283 ZIP codes in this dataset. Within OR, it ranks 254 of 463.
Learn more
Before leaning on 99356's figures: local microclimates explains what one yard in Arlington can differ from the 99356 normal, while zone vs. frost date explains why Zone 7a and Arlington's frost date answer different questions.