When to plant in Simpsonville, SC
USDA Zone 8aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Simpsonville, South Carolina — all computed from Simpsonville's nearest NOAA weather station.
In zone 8a, Simpsonville supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
FOUNTAIN INN 2 SW · 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 Simpsonville’s own odds, recorded at FOUNTAIN INN 2 SW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 30 | Apr 11 | Mar 26 | Oct 14 | Oct 26 | Nov 7 |
| 32°F | Apr 14 | Mar 29 | Mar 10 | Oct 24 | Nov 5 | Nov 20 |
| 28°F | Mar 31 | Mar 15 | Feb 21 | Nov 2 | Nov 17 | Dec 6 |
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 Simpsonville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Simpsonville planting FAQ
When is the last spring frost in Simpsonville, SC?
Simpsonville's average last spring frost falls near March 29 — 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 Simpsonville, SC?
Expect Simpsonville's first fall frost near November 5 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Simpsonville in?
Simpsonville is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Simpsonville?
Simpsonville has about 221 frost-free days — a long growing season — between the average last spring frost (March 29) and first fall frost (November 5).
When should I plant tomatoes in Simpsonville?
For Simpsonville, sow tomatoes indoors about February 1–February 15 and move the seedlings out around April 5, after the last spring frost.
Never miss a window in Simpsonville
An email when it’s time to start seeds, transplant, and sow — timed to Simpsonville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Fountain Inn · 6 km
- Mauldin · 7 km
- Five Forks · 10 km
- Gantt · 15 km
- Greenville · 15 km
- Wade Hampton · 18 km
- Taylors · 21 km
- Parker · 22 km
Frost dates recorded at FOUNTAIN INN 2 SW, 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 Simpsonville, SC — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00383145. Retrieved from https://blissgarden.com/south-carolina/simpsonville.