When to plant in Klamath Falls, OR
USDA Zone 6bKlamath Falls, Oregon frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
A ~101-day frost-free window makes Klamath Falls a short-season garden: choose early varieties and start long-season crops indoors well ahead of the last frost. In zone 6b, Klamath Falls gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
KLAMATH FALLS INTL 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 Klamath Falls’s own odds, recorded at KLAMATH FALLS INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 32°F | Jun 26 | Jun 9 | May 22 | Sep 4 | Sep 18 | Oct 1 |
| 28°F | Jun 12 | May 21 | May 2 | Sep 17 | Oct 2 | Oct 17 |
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 Klamath Falls, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 38 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.
Klamath Falls planting FAQ
When is the last spring frost in Klamath Falls, OR?
Plan for the last spring frost in Klamath Falls around June 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 Klamath Falls, OR?
Expect Klamath Falls's first fall frost near September 18 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Klamath Falls in?
Klamath Falls is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Klamath Falls?
Klamath Falls has about 101 frost-free days — a short growing season — between the average last spring frost (June 9) and first fall frost (September 18).
When should I plant tomatoes in Klamath Falls?
For Klamath Falls, sow tomatoes indoors about April 14–April 28 and move the seedlings out around June 16, after the last spring frost.
Never miss a window in Klamath Falls
An email when it’s time to start seeds, transplant, and sow — timed to Klamath Falls’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Altamont · 5 km
- Ashland · 76 km
- Medford · 89 km
- White City · 90 km
- Central Point · 95 km
- Grants Pass · 130 km
- Roseburg · 170 km
- Shasta Lake · 179 km
Frost dates recorded at KLAMATH FALLS INTL AP, 9 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 Klamath Falls, OR — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00094236. Retrieved from https://blissgarden.com/oregon/klamath-falls.