Antelope, OR 97001 Frost Dates
Frost dates for Antelope, OR, ZIP 97001
Typically, the last spring freeze lands around 05/15, roughly 260 days out. The first fall frost typically arrives around 10/11, about 147 frost-free days later.
Zone 7a (0 to 5°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 Antelope, not a forecast for this year.
What to do before the first frost
Zone 7a around Antelope has about 6 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.
Why 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Plant by 04/29 and you're betting against frost in roughly 9 years out of 10. 06/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Antelope compares
Antelope's growing season runs about 147 days, ranking 35,999 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 357 of 463.
Learn more
the frost range explains how to read the range around Antelope's dates instead of trusting one, and local microclimates explains what one yard in Antelope can differ from the 97001 normal.