Astoria, OR 98638 Frost Dates
When can you plant in Astoria, OR?
The last spring frost here typically falls around 04/24, about 239 days from today. The first fall frost typically arrives around 10/20, about 179 frost-free days later.
Astoria sits in USDA Zone 8b (15 to 20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 8 weeks of growing season left in Astoria before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/24 isn't a guarantee
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Astoria compares
About 179 days separate Astoria's last and first frost, putting it 25,245 of 40,283 ZIP codes nationally. Within OR, it ranks 300 of 463.
Learn more
the frost range covers how to read the range around Astoria's dates instead of trusting one. local microclimates covers what one yard in Astoria can differ from the 98638 normal.