ZIP 79101 Zone 7a

Texas · USDA zone 7a, average annual extreme minimum 0°F to 5°F.

Nearest qualified station: AMARILLO, TX US (USW00023047), 7.6 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is April 13. Median first 32°F is October 27. The 50% growing-season length is 195 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%March 29Earlier date. A last 32°F on or after this day is common.
50%April 13Median.
10%April 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%October 14Earlier date. A first 32°F on or before this day is uncommon.
50%October 27Median.
90%November 8Later 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%217
50%195
90%176

28°F threshold

10%50%90%
Last, on or afterApril 19April 2March 13
First, on or beforeOctober 22November 5November 18
Season at least236 days216 days194 days

36°F threshold

10%50%90%
Last, on or afterMay 7April 25April 9
First, on or beforeOctober 4October 18October 29
Season at least195 days175 days157 days

Station AMARILLO, TX US (USW00023047). Completeness flag S, 27 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 1093.3 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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