When to plant in Burlington, WA
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Burlington, Washington — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Burlington, while your frost dates still decide when annuals go out.
The average first fall frost in Burlington is now 7 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MT VERNON 3 WNW · 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 Burlington’s own odds, recorded at MT VERNON 3 WNW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 5 | Apr 18 | Mar 29 | Sep 29 | Oct 16 | Nov 6 |
| 32°F | Apr 14 | Mar 24 | Mar 3 | Oct 12 | Nov 3 | Nov 25 |
| 28°F | Mar 17 | Feb 27 | Jan 23 | Oct 31 | Nov 25 | Dec 23 |
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 Burlington, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 22 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.
Burlington planting FAQ
When is the last spring frost in Burlington, WA?
Plan for the last spring frost in Burlington around March 24 (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 Burlington, WA?
Expect Burlington's first fall frost near November 3 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Burlington in?
Burlington is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Burlington?
There are roughly 224 frost-free days in Burlington (a long growing season), running from the average last frost around March 24 to the first fall frost near November 3.
When should I plant tomatoes in Burlington?
In Burlington, 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 Burlington
An email when it’s time to start seeds, transplant, and sow — timed to Burlington’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Mount Vernon · 6 km
- Sedro-Woolley · 9 km
- Anacortes · 22 km
- Oak Harbor · 29 km
- Bellingham · 34 km
- Arlington · 36 km
- Camano · 36 km
- Marysville · 45 km
Frost dates recorded at MT VERNON 3 WNW, 5 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 Burlington, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00455678. Retrieved from https://blissgarden.com/washington/burlington.