When to plant in McKinney, TX
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in McKinney, Texas — is derived from the closest NOAA station with complete climate normals.
McKinney enjoys a long ~243-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. In zone 8b, McKinney 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 McKinney is now 11 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MCKINNEY MUNICIPAL AIRPORT · 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 McKinney’s own odds, recorded at MCKINNEY MUNICIPAL AIRPORT.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 19 | Mar 31 | Mar 9 | Oct 20 | Nov 3 | Nov 24 |
| 32°F | Apr 5 | Mar 17 | Feb 27 | Oct 27 | Nov 15 | Dec 5 |
| 28°F | Mar 24 | Mar 4 | Feb 15 | Nov 6 | Nov 30 | Dec 23 |
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 McKinney, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 24 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.
McKinney planting FAQ
When is the last spring frost in McKinney, TX?
McKinney's average last spring frost falls near March 17 — 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 McKinney, TX?
In McKinney, the first 32°F freeze of fall lands around November 15 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is McKinney in?
McKinney is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in McKinney?
McKinney has about 243 frost-free days — a long growing season — between the average last spring frost (March 17) and first fall frost (November 15).
When should I plant tomatoes in McKinney?
For McKinney, sow tomatoes indoors about January 20–February 3 and move the seedlings out around March 24, after the last spring frost.
Never miss a window in McKinney
An email when it’s time to start seeds, transplant, and sow — timed to McKinney’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at MCKINNEY MUNICIPAL AIRPORT, 7 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 McKinney, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00415766. Retrieved from https://blissgarden.com/texas/mckinney.