ZIP 75149 Zone 8b

Texas · USDA zone 8b, average annual extreme minimum 15°F to 20°F.

Nearest qualified station: DALLAS LOVE FLD, TX US (USW00013960), 14.8 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is March 2. Median first 32°F is November 29. The 50% growing-season length is 272 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%February 10Earlier date. A last 32°F on or after this day is common.
50%March 2Median.
10%March 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 10Earlier date. A first 32°F on or before this day is uncommon.
50%November 29Median.
90%December 18Later 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%299
50%272
90%246

28°F threshold

10%50%90%
Last, on or afterMarch 9February 18January 21
First, on or beforeNovember 21December 12January 8
Season at least333 days298 days269 days

36°F threshold

10%50%90%
Last, on or afterApril 4March 14February 25
First, on or beforeOctober 30November 16December 3
Season at least273 days247 days220 days

Station DALLAS LOVE FLD, TX US (USW00013960). 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 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 · Texas cities