ZIP 46016 Zone 6a

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

Nearest qualified station: ANDERSON SEWAGE PLT, IN US (USC00120177), 2.1 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is April 19. Median first 32°F is October 23. The 50% growing-season length is 186 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 3Earlier date. A last 32°F on or after this day is common.
50%April 19Median.
10%May 5Later 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 7Earlier date. A first 32°F on or before this day is uncommon.
50%October 23Median.
90%November 6Later 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%208
50%186
90%162

28°F threshold

10%50%90%
Last, on or afterApril 25April 5March 22
First, on or beforeOctober 21November 3November 20
Season at least235 days211 days186 days

36°F threshold

10%50%90%
Last, on or afterMay 16April 30April 16
First, on or beforeSeptember 30October 13October 26
Season at least184 days163 days143 days

Station ANDERSON SEWAGE PLT, IN US (USC00120177). 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 256.3 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · Indiana cities