When to plant in Norman, OK
USDA Zone 7bNorman, Oklahoma frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 7b, Norman supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
NORMAN 3SSE · 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 Norman’s own odds, recorded at NORMAN 3SSE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 28 | Apr 14 | Mar 30 | Oct 11 | Oct 25 | Nov 6 |
| 32°F | Apr 18 | Apr 3 | Mar 19 | Oct 21 | Nov 3 | Nov 17 |
| 28°F | Apr 7 | Mar 23 | Mar 5 | Oct 27 | Nov 12 | Nov 27 |
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 Norman, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 28 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.
Norman planting FAQ
When is the last spring frost in Norman, OK?
On average, the last spring frost in Norman is around April 3 (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 Norman, OK?
The first fall frost in Norman typically arrives around November 3 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Norman in?
Norman is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Norman?
Norman has about 214 frost-free days — a long growing season — between the average last spring frost (April 3) and first fall frost (November 3).
When should I plant tomatoes in Norman?
For Norman, sow tomatoes indoors about February 6–February 20 and move the seedlings out around April 10, after the last spring frost.
Never miss a window in Norman
An email when it’s time to start seeds, transplant, and sow — timed to Norman’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Moore · 15 km
- Newcastle · 23 km
- Midwest City · 24 km
- Del City · 25 km
- Choctaw · 28 km
- Oklahoma City · 29 km
- Shawnee · 38 km
- Mustang · 38 km
Frost dates recorded at NORMAN 3SSE, 11 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 Norman, OK — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00346386. Retrieved from https://blissgarden.com/oklahoma/norman.