ZIP 89129 Zone 9a

Nevada · USDA zone 9a, average annual extreme minimum 20°F to 25°F.

Nearest qualified station: LAS VEGAS AIR TERMINAL, NV US (USW00053123), 5.5 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is January 24. Median first 32°F is December 10. The 50% growing-season length is 323 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 27Earlier date. A last 32°F on or after this day is common.
50%January 24Median.
10%February 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%November 24Earlier date. A first 32°F on or before this day is uncommon.
50%December 10Median.
90%December 29Later 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%351
50%323
90%289

28°F threshold

10%50%90%
Last, on or afterFebruary 3January 2December 10
First, on or beforeDecember 4December 25January 22
Season at least365 days360 days330 days

36°F threshold

10%50%90%
Last, on or afterMarch 9February 16January 23
First, on or beforeNovember 15November 29December 14
Season at least311 days284 days257 days

Station LAS VEGAS AIR TERMINAL, NV US (USW00053123). Completeness flag R, 19 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 96.7%. Freeze dates are conditional on that threshold occurring. Elevation 671.5 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · Nevada cities