ZIP 75007 Zone 8b

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

Nearest qualified station: RICHARDSON, TX US (USC00417588), 8.9 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is March 7. Median first 32°F is November 21. The 50% growing-season length is 259 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 18Earlier date. A last 32°F on or after this day is common.
50%March 7Median.
10%March 29Later 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 2Earlier date. A first 32°F on or before this day is uncommon.
50%November 21Median.
90%December 9Later 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%285
50%259
90%232

28°F threshold

10%50%90%
Last, on or afterMarch 12February 24January 27
First, on or beforeNovember 14December 4December 26
Season at least318 days288 days256 days

36°F threshold

10%50%90%
Last, on or afterApril 11March 21March 2
First, on or beforeOctober 23November 10November 27
Season at least258 days233 days205 days

Station RICHARDSON, TX US (USC00417588). Completeness flag R, 11 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 206.7 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

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