Cave Junction, OR 97538 Frost Dates
Cave Junction, OR: when does the frost end?
Typically, the last spring freeze lands around 05/16, roughly 261 days out. Fall's first freeze usually shows up around 10/30, roughly 164 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 Cave Junction, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Cave Junction's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/16 isn't a guarantee
05/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/07 and only about 1 year in 10 sees frost after that.
Cave Junction against the rest of the dataset
At roughly 164 frost-free days, Cave Junction places 30,995 of 40,283 ZIP codes in this dataset. Within OR, it ranks 332 of 463.
Learn more
Before leaning on 97538's figures: zone vs. frost date explains why Zone 8b and Cave Junction's frost date answer different questions, while the frost range explains how to read the range around Cave Junction's dates instead of trusting one.