Junction City, OR 97448 Frost Dates
Junction City, OR: when does the frost end?
The last spring frost here typically falls around 04/11, about 226 days from today. Fall's first freeze usually shows up around 10/23, roughly 196 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Junction City 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 8 weeks until Junction City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Junction City's last frost
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Junction City against the rest of the dataset
Junction City's growing season runs about 196 days, ranking 18,950 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 248 of 463.
Learn more
Before leaning on 97448's figures: the frost range explains how to read the range around Junction City's dates instead of trusting one, while local microclimates explains what one yard in Junction City can differ from the 97448 normal.