When to plant in Kent, WA
USDA Zone 8bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Kent, Washington — all computed from Kent's nearest NOAA weather station.
In zone 8b, Kent supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Kent is now 9 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
KENT · 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 Kent’s own odds, recorded at KENT.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 30 | Apr 11 | Mar 26 | Oct 13 | Oct 27 | Nov 11 |
| 32°F | Apr 8 | Mar 20 | Feb 27 | Oct 26 | Nov 10 | Nov 26 |
| 28°F | Mar 16 | Feb 25 | Jan 19 | Nov 6 | Nov 24 | Dec 20 |
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 Kent, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 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.
Kent planting FAQ
When is the last spring frost in Kent, WA?
On average, the last spring frost in Kent is around March 20 (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 Kent, WA?
The first fall frost in Kent typically arrives around November 10 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Kent in?
Kent is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Kent?
Kent has about 235 frost-free days — a long growing season — between the average last spring frost (March 20) and first fall frost (November 10).
When should I plant tomatoes in Kent?
For Kent, sow tomatoes indoors about January 23–February 6 and move the seedlings out around March 27, after the last spring frost.
Never miss a window in Kent
An email when it’s time to start seeds, transplant, and sow — timed to Kent’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Lakeland North · 8 km
- Des Moines · 8 km
- Fairwood · 8 km
- Covington · 9 km
- SeaTac · 9 km
- Auburn · 9 km
- Renton · 10 km
- Lake Morton-Berrydale · 10 km
Frost dates recorded at KENT, 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 Kent, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00454169. Retrieved from https://blissgarden.com/washington/kent.