Clarks Hill, SC frost dates
From NOAA weather station Clarks Hill 1 W (USC00381726), elevation 400 ft. The station is named for Clarks Hill, and its coordinates are 1.4 miles from the Census Bureau’s internal point for Clarks Hill CDP.
Summary
In the 1991–2020 record, the median last spring freeze (32°F) at Clarks Hill 1 W is Mar 15 and the median first fall freeze is Nov 18, for a typical freeze-free season of 252 days. In about 1 year in 10 the last spring freeze comes after Apr 3, and in about 1 year in 10 the first fall freeze arrives by Nov 3. The station averages 57 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 11 days earlier than the state median (Mar 26), the median first freeze is 9 days later than the state median (Nov 9), and the growing season ranks #15 of 103 by length (longest = #1). The spread between the 90% and 10% spring dates is 40 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) | Mar 9 | Mar 29 | Apr 15 | Oct 26 | Nov 6 | Nov 22 | 200 / 225 / 248 |
| 32°F (freeze) | Feb 22 | Mar 15 | Apr 3 | Nov 3 | Nov 18 | Dec 12 | 224 / 252 / 281 |
| 28°F (hard freeze) | Jan 30 | Feb 26 | Mar 19 | Nov 16 | Dec 8 | Jan 7 | 254 / 289 / 323 |
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 Clarks Hill
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 Clarks Hill 1 W: Clarks Hill (1 mi), Modoc (4 mi), Evans (7 mi), Parksville (9 mi).
Nearby stations
- Appling 2 NW, GA — 11 mi; median last freeze Mar 27, first freeze Nov 7
- Augusta Daniel Fld AP, GA — 16 mi; median last freeze Feb 27, first freeze Dec 4
- Mccormick, SC — 18 mi; median last freeze Mar 28, first freeze Nov 7
- Edgefield 2.2 ENE, SC — 19 mi; median last freeze Mar 16, first freeze Nov 13
- Johnston 4 SW, SC — 21 mi; median last freeze Mar 26, first freeze Nov 8
About this station’s data
- Station ID: USC00381726 · Latitude 33.6633, longitude -82.1897 · Elevation 122 m (400 ft)
- NOAA completeness flag: R — Representative: meets WMO standards for 10 or more years; gaps filled from surrounding stations. Years of data used: 22.
- Source file: USC00381726.csv (NOAA NCEI 1991–2020 annual/seasonal normals).
Raw values from the NOAA file (32°F)
| Field | Value |
|---|---|
ANN-TMIN-PRBLST-T32FP10 | 04/03 |
ANN-TMIN-PRBLST-T32FP50 | 03/15 |
ANN-TMIN-PRBLST-T32FP90 | 02/22 |
ANN-TMIN-PRBFST-T32FP10 | 11/03 |
ANN-TMIN-PRBFST-T32FP50 | 11/18 |
ANN-TMIN-PRBFST-T32FP90 | 12/12 |
ANN-TMIN-PRBGSL-T32FP10 | 281.0 |
ANN-TMIN-PRBGSL-T32FP50 | 252.0 |
ANN-TMIN-PRBGSL-T32FP90 | 224.0 |