Graniteville, SC frost dates
From NOAA weather station Graniteville 1.2 NE (USC00383665), elevation 298 ft. The station is named for Graniteville, and its coordinates are 1.4 miles from the Census Bureau’s internal point for Graniteville CDP.
Summary
In the 1991–2020 record, the median last spring freeze (32°F) at Graniteville 1.2 NE is Apr 9 and the median first fall freeze is Nov 1, for a typical freeze-free season of 206 days. In about 1 year in 10 the last spring freeze comes after Apr 23, and in about 1 year in 10 the first fall freeze arrives by Oct 20. The station averages 75 nights per year with a low of 32°F or colder.
Compared with the median of 103 South Carolina stations in this dataset, the median last freeze here is 14 days later than the state median (Mar 26), the median first freeze is 8 days earlier than the state median (Nov 9), and the growing season ranks #95 of 103 by length (longest = #1). The spread between the 90% and 10% spring dates is 32 days, a measure of how variable spring is here.
Freeze probability table
| Threshold | Last spring occurrence | First fall occurrence | Season length (days) 90% / 50% / 10% | ||||
|---|---|---|---|---|---|---|---|
| Early (90% chance of a later freeze) | Median (50%) | Cautious (10% chance of a later freeze) | Early (10% chance by then) | Median (50%) | Late (90% chance by then) | ||
| 36°F (light frost possible) | Apr 6 | Apr 20 | May 2 | Oct 12 | Oct 24 | Nov 4 | 172 / 188 / 205 |
| 32°F (freeze) | Mar 22 | Apr 9 | Apr 23 | Oct 20 | Nov 1 | Nov 12 | 188 / 206 / 227 |
| 28°F (hard freeze) | Mar 4 | Mar 28 | Apr 13 | Oct 30 | Nov 9 | Nov 28 | 207 / 229 / 255 |
Read the spring “Cautious” column as the safer planting date: only about 1 year in 10 has a freeze after it. NOAA computes these from daily minimum temperatures at the station; your yard can differ, especially in low spots or at a different elevation.
Planting calendar for Graniteville
Pick how much frost risk you accept. The calendar applies generic, extension-published timing rules to this station’s dates. See the rules and sources.
| Crop | Start seeds indoors | Plant outdoors (spring) | Latest fall planting (est.) | Days to harvest |
|---|
Fall estimates count back from the median first fall freeze (32°F for tender crops, 28°F hard freeze for cool-season crops) by the longer days-to-harvest figure. These are rough planning aids, not recommendations for any specific variety; check seed packets and your county extension office.
Towns that use this station as their nearest
Census places within 15 miles whose closest station in this dataset is Graniteville 1.2 NE: Graniteville (1 mi), Warrenville (2 mi), Gloverville (4 mi), Langley (5 mi), Burnettown (6 mi), Murphys Estates (9 mi).
Nearby stations
- Aiken 2 E, SC — 6 mi; median last freeze Mar 19, first freeze Nov 14
- Aiken 5SE, SC — 8 mi; median last freeze Mar 21, first freeze Nov 7
- Johnston 4 SW, SC — 14 mi; median last freeze Mar 26, first freeze Nov 8
- Edgefield 2.2 ENE, SC — 16 mi; median last freeze Mar 16, first freeze Nov 13
- Augusta Daniel Fld AP, GA — 16 mi; median last freeze Feb 27, first freeze Dec 4
About this station’s data
- Station ID: USC00383665 · Latitude 33.5756, longitude -81.7897 · Elevation 91 m (298 ft)
- NOAA completeness flag: E — Estimated: fewer complete years at this site; NOAA estimated the normals statistically from nearby stations. Treat these dates with extra caution. Years of data used: 2.
- Source file: USC00383665.csv (NOAA NCEI 1991–2020 annual/seasonal normals).
Raw values from the NOAA file (32°F)
| Field | Value |
|---|---|
ANN-TMIN-PRBLST-T32FP10 | 04/23 |
ANN-TMIN-PRBLST-T32FP50 | 04/09 |
ANN-TMIN-PRBLST-T32FP90 | 03/22 |
ANN-TMIN-PRBFST-T32FP10 | 10/20 |
ANN-TMIN-PRBFST-T32FP50 | 11/01 |
ANN-TMIN-PRBFST-T32FP90 | 11/12 |
ANN-TMIN-PRBGSL-T32FP10 | 227.0 |
ANN-TMIN-PRBGSL-T32FP50 | 206.0 |
ANN-TMIN-PRBGSL-T32FP90 | 188.0 |