ZIP 43017 Zone 6b

Ohio · USDA zone 6b, average annual extreme minimum -5°F to 0°F.

Nearest qualified station: COLUMBUS OHIO STATE UNIV AP, OH US (USW00004804), 4 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is April 22. Median first 32°F is October 23. The 50% growing-season length is 183 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%April 6Earlier date. A last 32°F on or after this day is common.
50%April 22Median.
10%May 9Later 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 9Earlier date. A first 32°F on or before this day is uncommon.
50%October 23Median.
90%November 4Later 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%202
50%183
90%163

28°F threshold

10%50%90%
Last, on or afterApril 26April 9March 24
First, on or beforeOctober 20November 2November 15
Season at least226 days206 days185 days

36°F threshold

10%50%90%
Last, on or afterMay 20May 3April 18
First, on or beforeSeptember 28October 12October 24
Season at least181 days162 days141 days

Station COLUMBUS OHIO STATE UNIV AP, OH US (USW00004804). Completeness flag R, 23 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 275.8 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · Ohio cities