Cave Junction, OR 95543 Frost Dates
Cave Junction, OR: when does the frost end?
Typically, the last spring freeze lands around 03/11, roughly 195 days out. Fall's first freeze usually shows up around 11/23, roughly 256 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Cave Junction in Zone 8a (10 to 15°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 Cave Junction's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Cave Junction's last frost
03/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/12 and only about 1 year in 10 sees frost after that.
Cave Junction against the rest of the dataset
At roughly 256 frost-free days, Cave Junction places 6,831 of 40,283 ZIP codes in this dataset. Within OR, it ranks 48 of 463.
Learn more
Before leaning on 95543's figures: zone vs. frost date explains why Zone 8a 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.