When to plant in Woodinville, WA
USDA Zone 8bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Woodinville, Washington — all computed from Woodinville's nearest NOAA weather station.
A generous ~260-day season lets Woodinville gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. In zone 8b, Woodinville supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
SEATTLE SAND PT WSFO · 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 Woodinville’s own odds, recorded at SEATTLE SAND PT WSFO.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 26 | Apr 4 | Mar 17 | Oct 24 | Nov 5 | Nov 22 |
| 32°F | Mar 29 | Mar 8 | Feb 13 | Nov 4 | Nov 23 | Dec 16 |
| 28°F | Mar 1 | Feb 11 | Dec 27 | Nov 17 | Dec 11 | Jan 17 |
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 Woodinville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 19 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.
Woodinville planting FAQ
When is the last spring frost in Woodinville, WA?
Plan for the last spring frost in Woodinville around March 8 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Woodinville, WA?
In Woodinville, the first 32°F freeze of fall lands around November 23 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Woodinville in?
Woodinville is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Woodinville?
Woodinville has about 260 frost-free days — a long growing season — between the average last spring frost (March 8) and first fall frost (November 23).
When should I plant tomatoes in Woodinville?
For Woodinville, sow tomatoes indoors about January 11–January 25 and move the seedlings out around March 15, after the last spring frost.
Never miss a window in Woodinville
An email when it’s time to start seeds, transplant, and sow — timed to Woodinville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Bothell · 5 km
- Cottage Lake · 5 km
- Maltby · 6 km
- Bothell East · 6 km
- Kenmore · 8 km
- Kirkland · 8 km
- Bothell West · 9 km
- Redmond · 9 km
Frost dates recorded at SEATTLE SAND PT WSFO, 11 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 Woodinville, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00094290. Retrieved from https://blissgarden.com/washington/woodinville.