When to plant in Altus, OK
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in Altus, Oklahoma — is derived from the closest NOAA station with complete climate normals.
In zone 7b, Altus supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
ALTUS IRIG RSCH STN · 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 Altus’s own odds, recorded at ALTUS IRIG RSCH STN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 29 | Apr 15 | Apr 2 | Oct 10 | Oct 24 | Nov 5 |
| 32°F | Apr 21 | Apr 5 | Mar 20 | Oct 19 | Nov 2 | Nov 16 |
| 28°F | Apr 8 | Mar 24 | Mar 4 | Oct 25 | Nov 10 | Nov 28 |
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 Altus, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 22 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.
Altus planting FAQ
When is the last spring frost in Altus, OK?
On average, the last spring frost in Altus is around April 5 (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 Altus, OK?
Expect Altus's first fall frost near November 2 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Altus in?
Altus 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 Altus?
Altus has about 211 frost-free days — a long growing season — between the average last spring frost (April 5) and first fall frost (November 2).
When should I plant tomatoes in Altus?
For Altus, sow tomatoes indoors about February 8–February 22 and move the seedlings out around April 12, after the last spring frost.
Never miss a window in Altus
An email when it’s time to start seeds, transplant, and sow — timed to Altus’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Lawton · 81 km
- Elk City · 82 km
- Burkburnett · 94 km
- Wichita Falls · 110 km
- Weatherford · 113 km
- Duncan · 125 km
- Chickasha · 131 km
- El Reno · 157 km
Frost dates recorded at ALTUS IRIG RSCH STN, 8 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 Altus, OK — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00340179. Retrieved from https://blissgarden.com/oklahoma/altus.