ZIP 92882 Zone 10a

California · USDA zone 10a, average annual extreme minimum 30°F to 35°F.

Nearest qualified station: CHINO AP, CA US (USW00003179), 8 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is January 17. Median first 32°F is December 19. The 50% growing-season length is 335 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%December 18Earlier date. A last 32°F on or after this day is common.
50%January 17Median.
10%February 22Later 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 27Earlier date. A first 32°F on or before this day is uncommon.
50%December 19Median.
90%January 17Later 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%365
50%335
90%293

28°F threshold

10%50%90%
Last, on or afterJanuary 28January 3December 11
First, on or beforeDecember 7December 30January 23
Season at least365 days365 days346 days

36°F threshold

10%50%90%
Last, on or afterMarch 29February 24January 21
First, on or beforeNovember 12December 1December 18
Season at least316 days278 days241 days

Station CHINO AP, CA US (USW00003179). Completeness flag R, 18 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 85.4%. Freeze dates are conditional on that threshold occurring. Elevation 198.1 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · California cities