When to plant in Lake Stickney, WA
USDA Zone 9aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Lake Stickney, Washington — all computed from Lake Stickney's nearest NOAA weather station.
A generous ~253-day season lets Lake Stickney gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9a is warm enough that Lake Stickney can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
EVERETT SNOHOMISH AP · 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 Lake Stickney’s own odds, recorded at EVERETT SNOHOMISH AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 27 | Apr 3 | Mar 15 | Oct 19 | Nov 2 | Nov 20 |
| 32°F | Mar 29 | Mar 9 | Feb 15 | Oct 31 | Nov 17 | Dec 7 |
| 28°F | Mar 9 | Feb 13 | Jan 1 | Nov 15 | Dec 6 | Jan 8 |
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 Lake Stickney, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 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.
Lake Stickney planting FAQ
When is the last spring frost in Lake Stickney, WA?
Plan for the last spring frost in Lake Stickney around March 9 (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 Lake Stickney, WA?
The first fall frost in Lake Stickney typically arrives around November 17 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Lake Stickney in?
Lake Stickney is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Lake Stickney?
There are roughly 253 frost-free days in Lake Stickney (a long growing season), running from the average last frost around March 9 to the first fall frost near November 17.
When should I plant tomatoes in Lake Stickney?
In Lake Stickney, start tomato seeds indoors around January 12–January 26, then transplant seedlings outdoors around March 16 once the danger of frost has passed.
Never miss a window in Lake Stickney
An email when it’s time to start seeds, transplant, and sow — timed to Lake Stickney’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- North Lynnwood · 3 km
- Mill Creek · 3 km
- Martha Lake · 4 km
- Picnic Point · 4 km
- Mukilteo · 6 km
- Eastmont · 6 km
- Lynnwood · 6 km
- Mill Creek East · 7 km
Frost dates recorded at EVERETT SNOHOMISH AP, 4 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 Lake Stickney, WA — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024222. Retrieved from https://blissgarden.com/washington/lake-stickney.