When to plant in Enumclaw, WA
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Enumclaw, Washington — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Enumclaw, while your frost dates still decide when annuals go out.
The average last spring frost in Enumclaw is now 10 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
BUCKLEY 1 NE · 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 Enumclaw’s own odds, recorded at BUCKLEY 1 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 19 | May 1 | Apr 15 | Sep 28 | Oct 11 | Oct 31 |
| 32°F | Apr 27 | Apr 7 | Mar 16 | Oct 8 | Oct 30 | Nov 22 |
| 28°F | Mar 31 | Mar 8 | Feb 11 | Oct 26 | Nov 21 | Dec 15 |
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 Enumclaw, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Enumclaw planting FAQ
When is the last spring frost in Enumclaw, WA?
On average, the last spring frost in Enumclaw is around April 7 (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 Enumclaw, WA?
In Enumclaw, the first 32°F freeze of fall lands around October 30 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Enumclaw in?
Enumclaw is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Enumclaw?
There are roughly 206 frost-free days in Enumclaw (a moderate growing season), running from the average last frost around April 7 to the first fall frost near October 30.
When should I plant tomatoes in Enumclaw?
In Enumclaw, start tomato seeds indoors around February 10–February 24, then transplant seedlings outdoors around April 14 once the danger of frost has passed.
Never miss a window in Enumclaw
An email when it’s time to start seeds, transplant, and sow — timed to Enumclaw’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Prairie Ridge · 13 km
- Bonney Lake · 13 km
- Lake Tapps · 14 km
- Lake Morton-Berrydale · 17 km
- Maple Valley · 19 km
- Sumner · 19 km
- Covington · 20 km
- Auburn · 20 km
Frost dates recorded at BUCKLEY 1 NE, 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 Enumclaw, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00450945. Retrieved from https://blissgarden.com/washington/enumclaw.