When to plant in Rock Hill, SC
USDA Zone 8aEverything below — frost dates, hardiness zone, and what to plant when in Rock Hill, South Carolina — is derived from the closest NOAA station with complete climate normals.
Zone 8a means many perennials and even some tender shrubs overwinter in Rock Hill, while your frost dates still decide when annuals go out.
The average first fall frost in Rock Hill is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
WINTHROP UNIV · 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 Rock Hill’s own odds, recorded at WINTHROP UNIV.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 23 | Apr 9 | Mar 24 | Oct 16 | Oct 27 | Nov 9 |
| 32°F | Apr 11 | Mar 27 | Mar 10 | Oct 24 | Nov 5 | Nov 23 |
| 28°F | Mar 31 | Mar 15 | Feb 23 | Nov 2 | Nov 18 | Dec 9 |
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 Rock Hill, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Rock Hill planting FAQ
When is the last spring frost in Rock Hill, SC?
On average, the last spring frost in Rock Hill is around March 27 (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 Rock Hill, SC?
In Rock Hill, the first 32°F freeze of fall lands around November 5 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Rock Hill in?
Rock Hill is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Rock Hill?
There are roughly 223 frost-free days in Rock Hill (a long growing season), running from the average last frost around March 27 to the first fall frost near November 5.
When should I plant tomatoes in Rock Hill?
In Rock Hill, start tomato seeds indoors around January 30–February 13, then transplant seedlings outdoors around April 3 once the danger of frost has passed.
Never miss a window in Rock Hill
An email when it’s time to start seeds, transplant, and sow — timed to Rock Hill’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Fort Mill · 10 km
- Tega Cay · 11 km
- Lake Wylie · 18 km
- Pineville · 21 km
- Waxhaw · 25 km
- Weddington · 27 km
- Belmont · 32 km
- Charlotte · 35 km
Frost dates recorded at WINTHROP UNIV, 1 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 Rock Hill, SC — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00389350. Retrieved from https://blissgarden.com/south-carolina/rock-hill.