Hartwell, GA frost dates
From NOAA weather station Hartwell Dam (USC00094138), elevation 690 ft. The station is named for Hartwell, and its coordinates are 5.3 miles from the Census Bureau’s internal point for Hartwell city.
Summary
In the 1991–2020 record, the median last spring freeze (32°F) at Hartwell Dam is Mar 25 and the median first fall freeze is Nov 12, for a typical freeze-free season of 235 days. In about 1 year in 10 the last spring freeze comes after Apr 10, and in about 1 year in 10 the first fall freeze arrives by Oct 30. The station averages 45 nights per year with a low of 32°F or colder.
Compared with the median of 126 Georgia stations in this dataset, the median last freeze here is 4 days later than the state median (Mar 21), the median first freeze is the same day as the state median (Nov 12), and the growing season ranks #66 of 126 by length (longest = #1). The spread between the 90% and 10% spring dates is 35 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 20 | Apr 7 | Apr 21 | Oct 19 | Nov 1 | Nov 13 | 189 / 209 / 233 |
| 32°F (freeze) | Mar 6 | Mar 25 | Apr 10 | Oct 30 | Nov 12 | Dec 1 | 212 / 235 / 259 |
| 28°F (hard freeze) | Feb 13 | Mar 11 | Mar 29 | Nov 8 | Nov 25 | Dec 20 | 237 / 265 / 297 |
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 Hartwell
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 Hartwell Dam: Iva (10 mi).
Nearby stations
- Hartwell, GA — 5 mi; median last freeze Mar 20, first freeze Nov 15
- Anderson Co AP, SC — 13 mi; median last freeze Mar 29, first freeze Nov 8
- Elberton 2 N, GA — 14 mi; median last freeze Apr 6, first freeze Oct 30
- Anderson, SC — 16 mi; median last freeze Mar 23, first freeze Nov 11
- Sandy Springs 2 NE, SC — 20 mi; median last freeze Apr 5, first freeze Oct 30
About this station’s data
- Station ID: USC00094138 · Latitude 34.3392, longitude -82.8356 · Elevation 210 m (690 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: 9.
- Source file: USC00094138.csv (NOAA NCEI 1991–2020 annual/seasonal normals).
Raw values from the NOAA file (32°F)
| Field | Value |
|---|---|
ANN-TMIN-PRBLST-T32FP10 | 04/10 |
ANN-TMIN-PRBLST-T32FP50 | 03/25 |
ANN-TMIN-PRBLST-T32FP90 | 03/06 |
ANN-TMIN-PRBFST-T32FP10 | 10/30 |
ANN-TMIN-PRBFST-T32FP50 | 11/12 |
ANN-TMIN-PRBFST-T32FP90 | 12/01 |
ANN-TMIN-PRBGSL-T32FP10 | 259.0 |
ANN-TMIN-PRBGSL-T32FP50 | 235.0 |
ANN-TMIN-PRBGSL-T32FP90 | 212.0 |