Johnson City, OR 97267 Frost Dates
97267, near Johnson City, OR: the frost window
Typically, the last spring freeze lands around 02/11, roughly 167 days out. Fall's first freeze usually shows up around 12/05, roughly 303 days after the last spring frost.
Johnson City sits in USDA Zone 9a (20 to 25°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
Johnson City's growing season runs out in roughly 14 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 Johnson City's last frost
02/11 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 12/26 and only about 1 year in 10 sees frost after that.
Johnson City against the rest of the dataset
At roughly 303 frost-free days, Johnson City places 3,790 of 40,283 ZIP codes in this dataset. Within OR, it ranks 30 of 463.
Learn more
Two guides worth reading on 97267: local microclimates, on what one yard in Johnson City can differ from the 97267 normal, and zone vs. frost date, on why Zone 9a and Johnson City's frost date answer different questions.