When to plant in Ardmore, OK
USDA Zone 8aArdmore, Oklahoma frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
A generous ~244-day season lets Ardmore gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. In zone 8a, Ardmore 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 Ardmore is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
ARDMORE · 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 Ardmore’s own odds, recorded at ARDMORE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 14 | Mar 27 | Mar 6 | Oct 21 | Nov 5 | Nov 20 |
| 32°F | Apr 2 | Mar 15 | Feb 24 | Oct 29 | Nov 14 | Dec 2 |
| 28°F | Mar 22 | Mar 3 | Feb 10 | Nov 6 | Nov 26 | Dec 13 |
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 Ardmore, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 7 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.
Ardmore planting FAQ
When is the last spring frost in Ardmore, OK?
Ardmore's average last spring frost falls near March 15 — 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 Ardmore, OK?
In Ardmore, the first 32°F freeze of fall lands around November 14 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Ardmore in?
Ardmore is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Ardmore?
Ardmore has about 244 frost-free days — a long growing season — between the average last spring frost (March 15) and first fall frost (November 14).
When should I plant tomatoes in Ardmore?
For Ardmore, sow tomatoes indoors about January 18–February 1 and move the seedlings out around March 22, after the last spring frost.
Never miss a window in Ardmore
An email when it’s time to start seeds, transplant, and sow — timed to Ardmore’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at ARDMORE, 3 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 Ardmore, OK — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00340292. Retrieved from https://blissgarden.com/oklahoma/ardmore.