ZIP 47130 Zone 7a

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

Nearest qualified station: LOUISVILLE MCALPINE, KY US (USC00154955), 6.4 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is March 31. Median first 32°F is November 9. 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 14Earlier date. A last 32°F on or after this day is common.
50%March 31Median.
10%April 14Later 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 31Earlier date. A first 32°F on or before this day is uncommon.
50%November 9Median.
90%November 25Later 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%245
50%225
90%204

28°F threshold

10%50%90%
Last, on or afterApril 2March 18February 28
First, on or beforeNovember 5November 20December 6
Season at least271 days246 days226 days

36°F threshold

10%50%90%
Last, on or afterApril 30April 11March 26
First, on or beforeOctober 21November 1November 13
Season at least223 days203 days181 days

Station LOUISVILLE MCALPINE, KY US (USC00154955). Completeness flag R, 10 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 134.1 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