ZIP 30349 Zone 8a
Georgia · USDA zone 8a, average annual extreme minimum 10°F to 15°F.
Nearest qualified station: ATLANTA HARTSFIELD INTL AP, GA US (USW00013874), 4.8 miles from the Census ZCTA internal point for this ZIP.
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Last 32°F in spring
NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.
| Probability | Date | How to read it |
|---|---|---|
| 90% | February 23 | Earlier date. A last 32°F on or after this day is common. |
| 50% | March 15 | Median. |
| 10% | April 4 | Later date. A last 32°F on or after this day is uncommon. |
First 32°F in fall
NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.
| Probability | Date | How to read it |
|---|---|---|
| 10% | November 4 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 20 | Median. |
| 90% | December 10 | Later date. A first 32°F on or before this day is common. |
32°F growing-season length
Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.
| Probability the season is at least this long | Days |
|---|---|
| 10% | 281 |
| 50% | 252 |
| 90% | 226 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 20 | February 28 | February 1 |
| First, on or before | November 14 | December 5 | January 3 |
| Season at least | 314 days | 281 days | 252 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 16 | March 29 | March 10 |
| First, on or before | October 28 | November 7 | November 25 |
| Season at least | 252 days | 226 days | 204 days |
Station ATLANTA HARTSFIELD INTL AP, GA US (USW00013874). Completeness flag S, 29 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 307.8 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.