Cave Junction, OR 97544 Frost Dates
Frost dates for Cave Junction, OR, ZIP 97544
Around 05/04 is the usual last spring frost, about 249 days away. The first fall frost typically arrives around 10/13, about 160 frost-free days later.
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.
What to do before the first frost
Zone 8b around Cave Junction has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cave Junction compares
Cave Junction's growing season runs about 160 days, ranking 32,388 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 339 of 463.
Learn more
the frost range explains how to read the range around Cave Junction's dates instead of trusting one, and local microclimates explains what one yard in Cave Junction can differ from the 97544 normal.