When to plant in Aberdeen, WA
USDA Zone 8bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Aberdeen, Washington — all computed from Aberdeen's nearest NOAA weather station.
Zone 8b means many perennials and even some tender shrubs overwinter in Aberdeen, while your frost dates still decide when annuals go out.
Frost probability
ABERDEEN · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Aberdeen’s own odds, recorded at ABERDEEN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 11 | Apr 23 | Apr 4 | Oct 11 | Oct 27 | Nov 14 |
| 32°F | Apr 20 | Mar 29 | Feb 25 | Oct 27 | Nov 15 | Dec 10 |
| 28°F | Mar 20 | Feb 18 | Dec 27 | Nov 11 | Dec 6 | Jan 26 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Aberdeen, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 29 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Aberdeen planting FAQ
When is the last spring frost in Aberdeen, WA?
On average, the last spring frost in Aberdeen is around March 29 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Aberdeen, WA?
The first fall frost in Aberdeen typically arrives around November 15 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Aberdeen in?
Aberdeen is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Aberdeen?
There are roughly 231 frost-free days in Aberdeen (a long growing season), running from the average last frost around March 29 to the first fall frost near November 15.
When should I plant tomatoes in Aberdeen?
In Aberdeen, start tomato seeds indoors around February 1–February 15, then transplant seedlings outdoors around April 5 once the danger of frost has passed.
Never miss a window in Aberdeen
An email when it’s time to start seeds, transplant, and sow — timed to Aberdeen’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at ABERDEEN, 2 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Aberdeen, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00450008. Retrieved from https://blissgarden.com/washington/aberdeen.