When to plant in Lake Stevens, WA
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Lake Stevens, Washington — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Lake Stevens, while your frost dates still decide when annuals go out.
The average last spring frost in Lake Stevens is now 6 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
EVERETT · 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 Stevens’s own odds, recorded at EVERETT.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 8 | Apr 20 | Mar 31 | Oct 1 | Oct 18 | Nov 4 |
| 32°F | Apr 11 | Mar 24 | Mar 4 | Oct 16 | Nov 2 | Nov 23 |
| 28°F | Mar 20 | Mar 1 | Jan 31 | Oct 29 | Nov 21 | Dec 14 |
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 Stevens, 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.
Lake Stevens planting FAQ
When is the last spring frost in Lake Stevens, WA?
Lake Stevens's average last spring frost falls near March 24 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Lake Stevens, WA?
In Lake Stevens, the first 32°F freeze of fall lands around November 2 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Lake Stevens in?
Lake Stevens is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Lake Stevens?
There are roughly 223 frost-free days in Lake Stevens (a long growing season), running from the average last frost around March 24 to the first fall frost near November 2.
When should I plant tomatoes in Lake Stevens?
In Lake Stevens, start tomato seeds indoors around January 27–February 10, then transplant seedlings outdoors around March 31 once the danger of frost has passed.
Never miss a window in Lake Stevens
An email when it’s time to start seeds, transplant, and sow — timed to Lake Stevens’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Everett · 8 km
- Snohomish · 8 km
- Marysville · 10 km
- Eastmont · 13 km
- Silver Firs · 16 km
- Mill Creek · 18 km
- Monroe · 18 km
- Mukilteo · 18 km
Frost dates recorded at EVERETT, 8 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 Stevens, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00452675. Retrieved from https://blissgarden.com/washington/lake-stevens.