ZIP 44903 Zone 6a

Ohio · USDA zone 6a, average annual extreme minimum -10°F to -5°F.

Nearest qualified station: MANSFIELD LAHM MUNI AP, OH US (USW00014891), 3.1 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is April 26. Median first 32°F is October 22. The 50% growing-season length is 177 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 14Earlier date. A last 32°F on or after this day is common.
50%April 26Median.
10%May 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 6Earlier date. A first 32°F on or before this day is uncommon.
50%October 22Median.
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%198
50%177
90%158

28°F threshold

10%50%90%
Last, on or afterMay 2April 16April 1
First, on or beforeOctober 19November 2November 15
Season at least221 days201 days180 days

36°F threshold

10%50%90%
Last, on or afterMay 22May 6April 22
First, on or beforeSeptember 26October 9October 23
Season at least175 days155 days136 days

Station MANSFIELD LAHM MUNI AP, OH US (USW00014891). Completeness flag S, 28 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 394.7 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