Frost dates for Experiment, GA
At Experiment, the median last spring frost (32°F) is Mar 20 and the median first fall frost is Nov 13, for a typical growing season of 239 days. For a 90% chance that the last frost has passed, wait until Apr 10. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Mar 20Last spring frost (median)50% chance of 32°F after this date
- Apr 10Safer planting date10% chance of 32°F after this date
- Nov 13First fall frost (median)50% chance of 32°F by this date
- 239 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 13 | Apr 4 | Apr 22 |
| 32°F | Feb 25 | Mar 20 | Apr 10 |
| 28°F | Feb 8 | Mar 2 | Mar 25 |
| 24°F | Jan 20 | Feb 18 | Mar 12 |
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 21 | Nov 1 | Nov 18 |
| 32°F | Oct 31 | Nov 13 | Dec 3 |
| 28°F | Nov 9 | Nov 29 | Dec 24 |
| 24°F | Nov 23 | Dec 16 | Jan 13 |
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 | 189 days | 211 days | 237 days |
| 32°F | 211 days | 239 days | 268 days |
| 28°F | 241 days | 268 days | 303 days |
| 24°F | 270 days | 304 days | 332 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 99% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 30223 | 8a | 10 to 15°F | 3 km |
| 30224 | 8b | 15 to 20°F | 8 km |
| 30284 | 8b | 15 to 20°F | 9 km |
| 30292 | 8a | 10 to 15°F | 15 km |
| 30257 | 8b | 15 to 20°F | 16 km |
| 30206 | 8b | 15 to 20°F | 25 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 USC00093271, at 33.2631, -84.2842, elevation 285 m (934 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 52.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Atlanta (28 km)
- Jonesboro (31 km)
- McDonough 5 ENE (33 km)
- The Rock Rch (34 km)
- Atlanta Hartsfield Intl Airport (43 km)
- Thomaston 4se (44 km)
- Monticello (55 km)
- Covington (55 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.