When to plant in Clemson, SC
USDA Zone 8aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Clemson, South Carolina — all computed from Clemson's nearest NOAA weather station.
In zone 8a, Clemson supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
CLEMSON 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 Clemson’s own odds, recorded at CLEMSON UNIV.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 30 | Apr 14 | Mar 29 | Oct 12 | Oct 25 | Nov 6 |
| 32°F | Apr 18 | Apr 1 | Mar 16 | Oct 21 | Nov 3 | Nov 17 |
| 28°F | Apr 6 | Mar 19 | Feb 26 | Oct 31 | Nov 13 | Dec 3 |
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 Clemson, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 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.
Clemson planting FAQ
When is the last spring frost in Clemson, SC?
Clemson's average last spring frost falls near April 1 — 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 Clemson, SC?
In Clemson, the first 32°F freeze of fall lands around November 3 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Clemson in?
Clemson is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Clemson?
Clemson has about 216 frost-free days — a long growing season — between the average last spring frost (April 1) and first fall frost (November 3).
When should I plant tomatoes in Clemson?
For Clemson, sow tomatoes indoors about February 4–February 18 and move the seedlings out around April 8, after the last spring frost.
Never miss a window in Clemson
An email when it’s time to start seeds, transplant, and sow — timed to Clemson’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Anderson · 24 km
- Easley · 25 km
- Powdersville · 31 km
- Parker · 38 km
- Berea · 38 km
- Gantt · 39 km
- Greenville · 44 km
- Mauldin · 47 km
Frost dates recorded at CLEMSON UNIV, 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 Clemson, SC — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00381770. Retrieved from https://blissgarden.com/south-carolina/clemson.