ZIP 85295 Zone 9b

Arizona · USDA zone 9b, average annual extreme minimum 25°F to 30°F.

Nearest qualified station: CHANDLER HEIGHTS, AZ US (USC00021514), 7.6 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is February 1. Median first 32°F is December 11. The 50% growing-season length is 315 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%January 2Earlier date. A last 32°F on or after this day is common.
50%February 1Median.
10%February 27Later 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%November 23Earlier date. A first 32°F on or before this day is uncommon.
50%December 11Median.
90%January 1Later 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%347
50%315
90%281

28°F threshold

10%50%90%
Last, on or afterFebruary 11January 8December 15
First, on or beforeDecember 4December 26January 29
Season at least365 days357 days322 days

36°F threshold

10%50%90%
Last, on or afterMarch 11February 21January 29
First, on or beforeNovember 12November 28December 14
Season at least311 days280 days248 days

Station CHANDLER HEIGHTS, AZ US (USC00021514). Completeness flag R, 14 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 98.8%. Freeze dates are conditional on that threshold occurring. Elevation 434.3 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · Arizona cities