ZIP 30022 Zone 8a

Georgia · USDA zone 8a, average annual extreme minimum 10°F to 15°F.

Nearest qualified station: ATLANTA PEACHTREE AP, GA US (USW00053863), 10.9 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is March 25. Median first 32°F is November 9. The 50% growing-season length is 228 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

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.

ProbabilityDateHow to read it
90%March 5Earlier date. A last 32°F on or after this day is common.
50%March 25Median.
10%April 12Later 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.

ProbabilityDateHow to read it
10%October 26Earlier date. A first 32°F on or before this day is uncommon.
50%November 9Median.
90%November 27Later 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 longDays
10%253
50%228
90%205

28°F threshold

10%50%90%
Last, on or afterMarch 31March 12February 18
First, on or beforeNovember 4November 22December 14
Season at least287 days256 days229 days

36°F threshold

10%50%90%
Last, on or afterApril 22April 7March 21
First, on or beforeOctober 17October 29November 12
Season at least225 days205 days185 days

Station ATLANTA PEACHTREE AP, GA US (USW00053863). Completeness flag R, 20 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 305.4 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · Georgia cities