ZIP 29601 Zone 8a

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

Nearest qualified station: GREENVILLE, SC US (USC00383735), 2.8 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is March 28. Median first 32°F is November 7. The 50% growing-season length is 225 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 13Earlier date. A last 32°F on or after this day is common.
50%March 28Median.
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 24Earlier date. A first 32°F on or before this day is uncommon.
50%November 7Median.
90%November 26Later 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%247
50%225
90%205

28°F threshold

10%50%90%
Last, on or afterApril 1March 16February 25
First, on or beforeNovember 5November 22December 11
Season at least279 days253 days227 days

36°F threshold

10%50%90%
Last, on or afterApril 27April 8March 24
First, on or beforeOctober 15October 29November 11
Season at least222 days201 days182 days

Station GREENVILLE, SC US (USC00383735). Completeness flag R, 18 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 292.6 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · South Carolina cities