ZIP 47711 Zone 7a

Indiana · USDA zone 7a, average annual extreme minimum 0°F to 5°F.

Nearest qualified station: EVANSVILLE REGIONAL AP, IN US (USW00093817), 2.2 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is April 4. Median first 32°F is October 29. The 50% growing-season length is 206 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 22Earlier date. A last 32°F on or after this day is common.
50%April 4Median.
10%April 19Later 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 17Earlier date. A first 32°F on or before this day is uncommon.
50%October 29Median.
90%November 11Later 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%225
50%206
90%187

28°F threshold

10%50%90%
Last, on or afterApril 8March 25March 9
First, on or beforeOctober 26November 8November 26
Season at least252 days228 days208 days

36°F threshold

10%50%90%
Last, on or afterMay 2April 16April 3
First, on or beforeOctober 8October 21October 31
Season at least203 days183 days164 days

Station EVANSVILLE REGIONAL AP, IN US (USW00093817). 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 121.9 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