Frost dates for Siloam 3n, GA
At Siloam 3n, the median last spring frost (32°F) is Mar 27 and the median first fall frost is Nov 8, for a typical growing season of 226 days. For a 90% chance that the last frost has passed, wait until Apr 13. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Mar 27Last spring frost (median)50% chance of 32°F after this date
- Apr 13Safer planting date10% chance of 32°F after this date
- Nov 8First fall frost (median)50% chance of 32°F by this date
- 226 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Mar 23 | Apr 9 | Apr 28 |
| 32°F | Mar 6 | Mar 27 | Apr 13 |
| 28°F | Feb 17 | Mar 12 | Mar 31 |
| 24°F | Jan 28 | Feb 24 | Mar 19 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 16 | Oct 30 | Nov 12 |
| 32°F | Oct 25 | Nov 8 | Nov 26 |
| 28°F | Nov 4 | Nov 23 | Dec 17 |
| 24°F | Nov 15 | Dec 8 | Jan 5 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 181 days | 203 days | 222 days |
| 32°F | 205 days | 226 days | 255 days |
| 28°F | 230 days | 256 days | 287 days |
| 24°F | 257 days | 289 days | 322 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 30665 | 8b | 15 to 20°F | 3 km |
| 30642 | 8b | 15 to 20°F | 10 km |
| 30678 | 8b | 15 to 20°F | 12 km |
| 30669 | 8b | 15 to 20°F | 13 km |
| 30631 | 8b | 15 to 20°F | 19 km |
| 30625 | 8a | 10 to 15°F | 24 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00098064, at 33.5636, -83.0767, elevation 212 m (695 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 59.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lexington (34 km)
- Watkinsville 5 SSE (38 km)
- Washington 2 ESE (39 km)
- Warrenton (46 km)
- Athens Ben Epps Airport (49 km)
- Winterville (49 km)
- U Of Ga Plant Sci (55 km)
- Milledgeville (56 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.