Frost dates / Texas / Waco

Frost dates in Waco, TX

The station on this page is WACO DAM, TX US (USC00419417), 3.3 miles from the city point. Population in the Census 2024 estimate is 146,608.

Zone 8bUSDA average annual extreme minimum 15°F to 20°F, from ZIP 76710 (1.3 miles from the city point used on this page).

Median last 32°F is March 9. Median first 32°F is November 20. The 50% growing-season length is 256 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.

Probability	Date	How to read it
90%	February 17	Earlier date. A last 32°F on or after this day is common.
50%	March 9	Median.
10%	April 4	Later 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.

Probability	Date	How to read it
10%	November 2	Earlier date. A first 32°F on or before this day is uncommon.
50%	November 20	Median.
90%	December 9	Later 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 long	Days
10%	284
50%	256
90%	224

28°F threshold

	10%	50%	90%
Last, on or after	March 21	February 25	January 27
First, on or before	November 12	December 3	January 1
Season at least	321 days	282 days	250 days

36°F threshold

	10%	50%	90%
Last, on or after	April 13	March 24	March 2
First, on or before	October 26	November 10	November 27
Season at least	259 days	231 days	204 days

Station WACO DAM, TX US (USC00419417). Completeness flag R, 20 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 150.9 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Planting calendar for Waco · Zone 8b

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Waco, TX

Zone 8bAverage annual extreme minimum 15°F to 20°F

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Texas. Nearest qualified station: WACO DAM, TX US (USC00419417), 3.3 miles. Median last 32°F March 9. Median first 32°F November 20. The 50% growing-season length is 256 days.

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32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	April 4	March 9	February 17
First 32°F on or before	November 2	November 20	December 9

Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.

A wall calendar surrounded by vegetables, herbs, seed packets, and watering cans.

Planting calendar

Windows below are from Texas A&M AgriLife Extension, Texas Home Vegetable Gardening Guide, retrieved 2026-10-10. Table 8 is statewide and is written as weeks before or after the frost-free date (spring) and the first freeze date (fall). It is not a single calendar date for every Texas city.

Crop

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